Difference between revisions of "Market of Ideas Research Notes"
| Line 15: | Line 15: | ||
There are no current estimates of the average number of transactions per patent. Some patents, such as those participating in some patent pools, may be licensed several thousand times. However, exclusive licenses are still very common and patent sales typically do not occur annually. A range of say 1 to 5 transactions per patent is a reasonable guess. | There are no current estimates of the average number of transactions per patent. Some patents, such as those participating in some patent pools, may be licensed several thousand times. However, exclusive licenses are still very common and patent sales typically do not occur annually. A range of say 1 to 5 transactions per patent is a reasonable guess. | ||
Likewise, with so much rough estimation of other necessary numbers, no reasonable estimates of the magnitudes of spillovers is available. Innovation has strong positive externalities so the spillover factor should therefore be greater than 1. Moreover, innovation is an input into many different types of economic activity, including more innovation. This would suggest that, at least for the purposes of GDP accounting, the multiplier should be more than 2: The seller would experience the revenue from the license and the buyer would experience new revenue from the sale of a product or new innovation for which the input was necessary. | Likewise, with so much rough estimation of other necessary numbers, no reasonable estimates of the magnitudes of spillovers is available. Innovation has strong positive externalities so the spillover factor should therefore be greater than 1. Moreover, innovation is an input into many different types of economic activity, including more innovation. This would suggest that, at least for the purposes of GDP accounting, the multiplier should be more than 2: The seller would experience the revenue from the license and the buyer would experience new revenue from the sale of a product or new innovation for which the input was necessary. | ||
| + | |||
| + | *approximately 2.5m active patents available to participate in the market for ideas today | ||
| + | |||
| + | *"at any given time, over about 95% of patents are unlicensed and over about 97% of patents are generating no royalties" | ||
| + | :: [https://books.google.com/books?id=rESRFPqSKzQC&q=unlicensed#v=snippet&q=unlicensed&f=false From Ideas to Assets: Investing Wisely in Intellectual Property Page 332] | ||
| + | |||
| + | ===University Licensing=== | ||
| + | |||
| + | '''AUTM Report:''' [http://www.autmvisitors.net/sites/default/files/documents/FY2014%20Highlights.pdf 2014 Licensing Acticity Survey, Association of University Technology Managers] | ||
| + | |||
| + | :: Data is for Universities/Academic Institutions | ||
| + | |||
| + | *5,435 licenses executed (up 4.5% over prior year) | ||
| + | *1,461 options executed (up 7.7%) | ||
| + | *549 executed licenses containing equity (up 17%) | ||
| + | *914 startup companies formed (up 11.7%) | ||
| + | *4,688 startups still operating as of the end of FY2014 (up 11.4%) | ||
| + | *965 new commercial products created (up $34.2%) | ||
| + | *6,363 U.S. patents issued (up 11%) | ||
| + | |||
| + | ===Corporate Licensing=== | ||
| + | |||
| + | *Interesting Report [https://www.ibm.com/ibm/files/N225208E26630J62/inventors_forum.pdf IBM Inventor's Forum Global Innovation Outlook Report] | ||
| + | ::*U.S. firms annually waste $1 trillion in underused IP assets by failing to extract full value through partnerships, according to Navi Radjou of Forrester Research. | ||
| + | ::* | ||
| + | *Another IBM Report [https://www.ibm.com/ibm/files/S376023B46442F89/building_a_new_ip_marketplace-report.pdf Building A New IP Marketplace report] | ||
| + | ::*“In 200 , the number of patent applications we received continued to grow at a rapid pace. Our of ce now receives many patent applications on CD-ROM, containing millions of pages of data. In short, the volume and complexity of patent applications continues to outpace current capacity to examine them. The result is a pending— and growing— application backlog of historic proportions.” | ||
| + | :::Jon W. Dudas Under Secretary of Commerce for Intellectual Property and Director of the United States Patent and Trademark Office USPTO 2005 Annual Report | ||
| + | ::*“Obviously, one thing a market does is to determine prices. With patents or patent licenses, this is reasonably tricky. Patent rights are options on an uncertain future. We ought to seek some guidance from how options markets operate.” | ||
| + | :::Frederic M. Scherer Harvard University | ||
| + | |||
| + | ===Market for Technology=== | ||
| + | [http://www.hbs.edu/businesshistory/Documents/BHR870102.pdf Patent Alchemy: The Market for Technology in US History] by Naomi R. Lamoreaux, Kenneth L. Sokoloff, and Dhanoos Sutthiphisal | ||
| + | ::*According to Carlos Serrano. Carlos J. Serrano, “The Dynamics of the Transfer and Renewal of Patents,” RAND Journal of Economics 41 (Winter 2010): 686–708 [http://onlinelibrary.wiley.com/doi/10.1111/j.1756-2171.2010.00117.x/full Link] | ||
| + | :::*12.4 percent of patents obtained in last two decades of 20th century were sold | ||
| + | ::*Another Serrano paper cited in above Lamoreaux et al, quote from Lamaoreaux: | ||
| + | :::*"Using data on renewals, Serrano calculated that patents that were sold were on average about three times more valuable than those that were not" (Lamoreaux 35) | ||
| + | :::: from Estimating the Gains from Trade in the Market for Innovation: Evidence from the Transfer of Patents,” NBER Working Paper 17304 (Aug. 2011). [http://www.nber.org/papers/w17304 Link] | ||
| + | |||
== Patent Valuation == | == Patent Valuation == | ||
| Line 23: | Line 62: | ||
'''Griliches Excerpt:''' | '''Griliches Excerpt:''' | ||
"Among the patents reported to be in current use and with relevant numerical responses and a positive gain (accounting for about 20 percent of all the relevant responses), the mean value was $577,000 per patent, but the median value was only about $25,000 (implying, under the assumption of log normality, 2.5 as the coefficient of variation and a standard deviation of about $1.5 million). If one includes all the no gain, loss, and not yet used patents, the mean gain falls to about $11 2,000, and the median is close to zero or below (computed from the tables in Sanders, Rossman, and Hams 1958, pp. 355 and 357). Even this lower mean number is quite impressive, roughly equivalent to $473,000 per average patent in 1988 prices (using the GNP deflator to convert it from 1957 prices), but so also is the associated dispersion." (Griliches 309) | "Among the patents reported to be in current use and with relevant numerical responses and a positive gain (accounting for about 20 percent of all the relevant responses), the mean value was $577,000 per patent, but the median value was only about $25,000 (implying, under the assumption of log normality, 2.5 as the coefficient of variation and a standard deviation of about $1.5 million). If one includes all the no gain, loss, and not yet used patents, the mean gain falls to about $11 2,000, and the median is close to zero or below (computed from the tables in Sanders, Rossman, and Hams 1958, pp. 355 and 357). Even this lower mean number is quite impressive, roughly equivalent to $473,000 per average patent in 1988 prices (using the GNP deflator to convert it from 1957 prices), but so also is the associated dispersion." (Griliches 309) | ||
| − | + | ||
Griliches, Z. (1998). Patent statistics as economic indicators: a survey. | Griliches, Z. (1998). Patent statistics as economic indicators: a survey. | ||
Revision as of 15:33, 28 September 2016
Contents
Patent Applications & Renewals
In 2015 there were 629,647 patent applications. Assuming history is anything to go by, around 80% will be eventually granted. Patents are valid for 20 years from application, providing renewal fees are paid at 3½, 7½, and 11½ years. Scotchmer (1999) reports that half of all patents are not renewed past 10 years. It currently takes the patent office more than 2 years, down from more than 3 years before the America Invents Act, to process a patent application. Applicants can request that undue processing time be added back to their patent terms. There are other factors, like terminal disclaimers and being found invalid or unenforceable by courts, which affect patent terms. A conservative estimate of mean patent term is 10 years from application. We will therefore use the 2.5m patents granted from 2006 to 2015 as a proxy for the number of active patents.
- “no more than 50% of patents are renewed past 10 years” (Scotchmer 1999)
- Scotchmer, S. (1999). On the optimality of the patent renewal system. The RAND Journal of Economics, pp. 181-96.
- “less than forty percent of patentees pay all three maintenance fees"
- USPTO.gov - Patent Term Adjustment (PTA) Questions and Answers.
Patent Trade
The trade in patents could take several forms. Patents could be sold (in part or in whole), securitized, licensed, or traded in some other fashion. The academic literature has little handle on the current scale of any of these activities. Our best estimate is that less than 5% of U.S. patents are currently licensed and that less than 50% are ever used in any way. In 2014, the rate for licensing relative to patent grants for universities participating in the Association of University Technology Managers survey was 23%. This rate has increased materially in recent years as the market for ideas gains some traction. However, universities don’t set out to create commercializable technologies. Private firms and small inventors should create patents with greater market relevance and so be able to trade at higher rates. We therefore suggest that 20% to 40% licensing rates are achievable, which would imply a difference in the percent of patents traded of between 15% and 35%.
There are no current estimates of the average number of transactions per patent. Some patents, such as those participating in some patent pools, may be licensed several thousand times. However, exclusive licenses are still very common and patent sales typically do not occur annually. A range of say 1 to 5 transactions per patent is a reasonable guess. Likewise, with so much rough estimation of other necessary numbers, no reasonable estimates of the magnitudes of spillovers is available. Innovation has strong positive externalities so the spillover factor should therefore be greater than 1. Moreover, innovation is an input into many different types of economic activity, including more innovation. This would suggest that, at least for the purposes of GDP accounting, the multiplier should be more than 2: The seller would experience the revenue from the license and the buyer would experience new revenue from the sale of a product or new innovation for which the input was necessary.
- approximately 2.5m active patents available to participate in the market for ideas today
- "at any given time, over about 95% of patents are unlicensed and over about 97% of patents are generating no royalties"
University Licensing
AUTM Report: 2014 Licensing Acticity Survey, Association of University Technology Managers
- Data is for Universities/Academic Institutions
- 5,435 licenses executed (up 4.5% over prior year)
- 1,461 options executed (up 7.7%)
- 549 executed licenses containing equity (up 17%)
- 914 startup companies formed (up 11.7%)
- 4,688 startups still operating as of the end of FY2014 (up 11.4%)
- 965 new commercial products created (up $34.2%)
- 6,363 U.S. patents issued (up 11%)
Corporate Licensing
- Interesting Report IBM Inventor's Forum Global Innovation Outlook Report
- U.S. firms annually waste $1 trillion in underused IP assets by failing to extract full value through partnerships, according to Navi Radjou of Forrester Research.
- Another IBM Report Building A New IP Marketplace report
- “In 200 , the number of patent applications we received continued to grow at a rapid pace. Our of ce now receives many patent applications on CD-ROM, containing millions of pages of data. In short, the volume and complexity of patent applications continues to outpace current capacity to examine them. The result is a pending— and growing— application backlog of historic proportions.”
- Jon W. Dudas Under Secretary of Commerce for Intellectual Property and Director of the United States Patent and Trademark Office USPTO 2005 Annual Report
- “Obviously, one thing a market does is to determine prices. With patents or patent licenses, this is reasonably tricky. Patent rights are options on an uncertain future. We ought to seek some guidance from how options markets operate.”
- Frederic M. Scherer Harvard University
Market for Technology
Patent Alchemy: The Market for Technology in US History by Naomi R. Lamoreaux, Kenneth L. Sokoloff, and Dhanoos Sutthiphisal
- According to Carlos Serrano. Carlos J. Serrano, “The Dynamics of the Transfer and Renewal of Patents,” RAND Journal of Economics 41 (Winter 2010): 686–708 Link
- 12.4 percent of patents obtained in last two decades of 20th century were sold
- Another Serrano paper cited in above Lamoreaux et al, quote from Lamaoreaux:
- "Using data on renewals, Serrano calculated that patents that were sold were on average about three times more valuable than those that were not" (Lamoreaux 35)
- from Estimating the Gains from Trade in the Market for Innovation: Evidence from the Transfer of Patents,” NBER Working Paper 17304 (Aug. 2011). Link
Patent Valuation
Estimating the average transaction value is difficult. The average value of a U.S. patent is essentially unknown. Academics have suggested average values including $0.5m, $1m, $1.8m, $3.8m, and $18m (in 2016 dollars) per patent, depending on the sample being considered. However, distributions of patent values exhibit extreme skewness (driving the mean well above the median), and there are always strong sample section issues. In some sectors, like biotechnology and pharmaceuticals, intellectual property has been estimated to account for around 80% of a product’s final selling price. In other sectors, were there many hundreds if not thousands of patents are required to make a product –a smart phone may require more than 7,000 patents – estimates of the relative value of intellectual property are much more difficult. Nevertheless, taking the sales price less the manufacturing cost, with adjustment for returns to brand, market power, and other factors, would suggest that patent value accounts for around ¾ of the sales price of high-technology products.
The cost of prosecuting a patent application, inclusive of fees and legal costs, is typically estimated to be between $20,000 and $50,000, depending on the patent’s complexity. The transaction value of patents need not cover this fixed cost, even if the patent holder doesn’t commercialize the patent themselves. The aggregate revenue from a portfolio of patents should cover both the cost of prosecuting applications and the research and development cost, and provide a return on average across patent-holders. As transaction volumes increase, and as transaction costs fall with standardization of licenses, more efficient intermediaries, and generally better markets, the average transaction value will naturally decrease. An estimate of $10,000 to $100,000 per patent trade is probably reasonable.
Griliches Excerpt: "Among the patents reported to be in current use and with relevant numerical responses and a positive gain (accounting for about 20 percent of all the relevant responses), the mean value was $577,000 per patent, but the median value was only about $25,000 (implying, under the assumption of log normality, 2.5 as the coefficient of variation and a standard deviation of about $1.5 million). If one includes all the no gain, loss, and not yet used patents, the mean gain falls to about $11 2,000, and the median is close to zero or below (computed from the tables in Sanders, Rossman, and Hams 1958, pp. 355 and 357). Even this lower mean number is quite impressive, roughly equivalent to $473,000 per average patent in 1988 prices (using the GNP deflator to convert it from 1957 prices), but so also is the associated dispersion." (Griliches 309)
Griliches, Z. (1998). Patent statistics as economic indicators: a survey.
Patent Litigation
| year | patent cases filed | unique patents litigated | number patents granted |
|---|---|---|---|
| 2001 | 2424.0 | 1807.0 | 183970.0 |
| 2002 | 2531.0 | 184375.0 | |
| 2003 | 2766.0 | 187012.0 | |
| 2004 | 2771.0 | 181299.0 | |
| 2005 | 2523.0 | 157718.0 | |
| 2006 | 2581.0 | 196405.0 | |
| 2007 | 2776.0 | 182899.0 | |
| 2008 | 2576.0 | 185224.0 | |
| 2009 | 2549.0 | 191927.0 | |
| 2010 | 2770.0 | 244341.0 | |
| 2011 | 3572.0 | 247713.0 | |
| 2012 | 5461.0 | 276788.0 | |
| 2013.0 | 6128.0 | 302948.0 | |
| 2014 | 5086.0 | 326032.0 | |
| 2015 | 5821.0 | 4686.0 | 325979.0 |
(Data from LexMachina and USPTO)
USPTO Data on Grants and Applications
Sourced from USPTO Table
| Year of Application or Grant | Utility Patent Applications, U.S. Origin | Utility Patent Applications, Foreign Origin | Utility Patent Applications, Foreign Origin Percent Share | Utility Patent Applications, All Origin Total | Design Patent Applications | Plant Patent Applications | Total Patent Applications * | Utility Patent Grants, U.S. Origin | Utility Patent Grants, Foreign Origin | Utility Patent Grants, Foreign Origin Percent Share | Utility Patent Grants, All Origin Total | Design Patent Grants | Plant Patent Grants | Reissue Patent Grants | Total Patent Grants | Total Patent Grants, Foreign Origin Percent Share * | Year of Application or Grant | Percent Granted | patent cases filed | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1963.0 | 66715.0 | 19154.0 | 23.3 | 85869.0 | 4968.0 | 145.0 | 90982.0 | 0.0 | 37174.0 | 8505.0 | 18.6 | 45679.0 | 2965.0 | 129.0 | 198.0 | 48971.0 | 18 * | 1963.0 | 0.538249324042 | |
| 1964.0 | 67013.0 | 20579.0 | 23.5 | 87592.0 | 5259.0 | 120.0 | 92971.0 | 0.0 | 38410.0 | 8965.0 | 18.9 | 47375.0 | 2686.0 | 128.0 | 200.0 | 50389.0 | 18 * | 1964.0 | 0.541986210754 | |
| 1965.0 | 72317.0 | 22312.0 | 23.6 | 94629.0 | 5413.0 | 108.0 | 100150.0 | 0.0 | 50331.0 | 12526.0 | 19.9 | 62857.0 | 3424.0 | 120.0 | 246.0 | 66647.0 | 19 * | 1965.0 | 0.665471792312 | |
| 1966.0 | 66855.0 | 21670.0 | 24.5 | 88525.0 | 4853.0 | 104.0 | 93482.0 | 0.0 | 54634.0 | 13771.0 | 20.1 | 68405.0 | 3188.0 | 114.0 | 179.0 | 71886.0 | 20 * | 1966.0 | 0.768982263965 | |
| 1967.0 | 61651.0 | 24046.0 | 28.0 | 85697.0 | 4744.0 | 103.0 | 90544.0 | 0.0 | 51273.0 | 14379.0 | 21.9 | 65652.0 | 3165.0 | 85.0 | 196.0 | 69098.0 | 21 * | 1967.0 | 0.76314278141 | |
| 1968.0 | 67180.0 | 26291.0 | 28.1 | 93471.0 | 5171.0 | 95.0 | 98737.0 | 0.0 | 45781.0 | 13323.0 | 22.5 | 59104.0 | 3352.0 | 72.0 | 186.0 | 62714.0 | 22 * | 1968.0 | 0.635162097289 | |
| 1969.0 | 68243.0 | 30507.0 | 30.9 | 98750.0 | 5496.0 | 111.0 | 104357.0 | 0.0 | 50394.0 | 17165.0 | 25.4 | 67559.0 | 3335.0 | 103.0 | 233.0 | 71230.0 | 25 * | 1969.0 | 0.682560824861 | |
| 1970.0 | 72343.0 | 30832.0 | 29.9 | 103175.0 | 5996.0 | 188.0 | 109359.0 | 0.0 | 47072.0 | 17357.0 | 26.9 | 64429.0 | 3214.0 | 52.0 | 269.0 | 67964.0 | 26.0 | 1970.0 | 0.621476055926 | |
| 1971.0 | 71089.0 | 33640.0 | 32.1 | 104729.0 | 6211.0 | 155.0 | 111095.0 | 0.0 | 55976.0 | 22341.0 | 28.5 | 78317.0 | 3156.0 | 71.0 | 246.0 | 81790.0 | 28.0 | 1971.0 | 0.736216751429 | |
| 1972.0 | 65943.0 | 33355.0 | 33.6 | 99298.0 | 5867.0 | 135.0 | 105300.0 | 0.0 | 51518.0 | 23292.0 | 31.1 | 74810.0 | 2901.0 | 199.0 | 275.0 | 78185.0 | 30.0 | 1972.0 | 0.742497625831 | |
| 1973.0 | 66935.0 | 37144.0 | 35.7 | 104079.0 | 5425.0 | 118.0 | 109622.0 | 0.0 | 51500.0 | 22643.0 | 30.5 | 74143.0 | 4033.0 | 132.0 | 314.0 | 78622.0 | 30.0 | 1973.0 | 0.717210049078 | |
| 1974.0 | 64093.0 | 38445.0 | 37.5 | 102538.0 | 5318.0 | 155.0 | 108011.0 | 0.0 | 50645.0 | 25633.0 | 33.6 | 76278.0 | 4304.0 | 261.0 | 435.0 | 81278.0 | 33.0 | 1974.0 | 0.752497430817 | |
| 1975.0 | 64445.0 | 36569.0 | 36.2 | 101014.0 | 6292.0 | 150.0 | 107456.0 | 0.0 | 46715.0 | 25285.0 | 35.1 | 72000.0 | 4282.0 | 150.0 | 378.0 | 76810.0 | 0.0 | 1975.0 | 0.714804198928 | |
| 1976.0 | 65050.0 | 37294.0 | 36.4 | 102344.0 | 7061.0 | 175.0 | 109580.0 | 0.0 | 44280.0 | 25946.0 | 36.9 | 70226.0 | 4564.0 | 176.0 | 422.0 | 75388.0 | 0.0 | 1976.0 | 0.687972257711 | |
| 1977.0 | 62863.0 | 38068.0 | 37.7 | 100931.0 | 7258.0 | 188.0 | 108377.0 | 0.0 | 41484.0 | 23785.0 | 36.4 | 65269.0 | 3929.0 | 173.0 | 410.0 | 69781.0 | 36.0 | 1977.0 | 0.643872777434 | |
| 1978.0 | 61441.0 | 39475.0 | 39.1 | 100916.0 | 7538.0 | 194.0 | 108648.0 | 0.0 | 41255.0 | 24847.0 | 37.6 | 66102.0 | 3862.0 | 186.0 | 364.0 | 70514.0 | 37.0 | 1978.0 | 0.649013327443 | |
| 1979.0 | 60535.0 | 39959.0 | 39.8 | 100494.0 | 7519.0 | 196.0 | 108209.0 | 0.0 | 30078.0 | 18776.0 | 38.4 | 48854.0 | 3119.0 | 131.0 | 309.0 | 52413.0 | 37.0 | 1979.0 | 0.484368213365 | |
| 1980.0 | 62098.0 | 42231.0 | 40.5 | 104329.0 | 7830.0 | 220.0 | 112379.0 | 0.0 | 37355.0 | 24464.0 | 39.6 | 61819.0 | 3949.0 | 117.0 | 285.0 | 66170.0 | 38.0 | 1980.0 | 0.588811076803 | |
| 1981.0 | 62404.0 | 44009.0 | 41.4 | 106413.0 | 7375.0 | 178.0 | 113966.0 | 0.0 | 39223.0 | 26548.0 | 40.4 | 65771.0 | 4745.0 | 183.0 | 365.0 | 71064.0 | 39.0 | 1981.0 | 0.623554393416 | |
| 1982.0 | 63316.0 | 46309.0 | 42.2 | 109625.0 | 8174.0 | 188.0 | 117987.0 | 0.0 | 33896.0 | 23992.0 | 41.4 | 57888.0 | 4944.0 | 173.0 | 271.0 | 63276.0 | 40.0 | 1982.0 | 0.536296371634 | |
| 1983.0 | 59390.0 | 44313.0 | 42.7 | 103703.0 | 8082.0 | 255.0 | 112040.0 | 0.0 | 32871.0 | 23989.0 | 42.2 | 56860.0 | 4563.0 | 197.0 | 362.0 | 61982.0 | 41.0 | 1983.0 | 0.553213138165 | |
| 1984.0 | 61841.0 | 49443.0 | 44.4 | 111284.0 | 8739.0 | 253.0 | 120276.0 | 0.0 | 38367.0 | 28833.0 | 42.9 | 67200.0 | 4938.0 | 212.0 | 300.0 | 72650.0 | 42.0 | 1984.0 | 0.604027403638 | |
| 1985.0 | 63874.0 | 53132.0 | 45.4 | 117006.0 | 9551.0 | 231.0 | 126788.0 | 0.0 | 39555.0 | 32106.0 | 44.8 | 71661.0 | 5066.0 | 242.0 | 276.0 | 77245.0 | 44.0 | 1985.0 | 0.60924535445 | |
| 1986.0 | 65487.0 | 56946.0 | 46.5 | 122433.0 | 9912.0 | 320.0 | 132665.0 | 0.0 | 38126.0 | 32734.0 | 46.2 | 70860.0 | 5518.0 | 224.0 | 260.0 | 76862.0 | 45.0 | 1986.0 | 0.579369087551 | |
| 1987.0 | 68315.0 | 59602.0 | 46.6 | 127917.0 | 11153.0 | 385.0 | 139455.0 | 0.0 | 43520.0 | 39432.0 | 47.5 | 82952.0 | 5959.0 | 229.0 | 245.0 | 89385.0 | 47.0 | 1987.0 | 0.640959449285 | |
| 1988.0 | 75192.0 | 64633.0 | 46.2 | 139825.0 | 11289.0 | 377.0 | 151491.0 | 0.0 | 40497.0 | 37427.0 | 48.0 | 77924.0 | 5679.0 | 425.0 | 244.0 | 84272.0 | 47.0 | 1988.0 | 0.556283871649 | |
| 1989.0 | 82370.0 | 70380.0 | 46.1 | 152750.0 | 12615.0 | 383.0 | 165748.0 | 0.0 | 50185.0 | 45352.0 | 47.5 | 95537.0 | 6092.0 | 587.0 | 317.0 | 102533.0 | 47.0 | 1989.0 | 0.618607766006 | |
| 1990.0 | 90643.0 | 73915.0 | 44.9 | 164558.0 | 11288.0 | 418.0 | 176264.0 | 0.0 | 47391.0 | 42974.0 | 47.6 | 90365.0 | 8024.0 | 318.0 | 370.0 | 99077.0 | 47.0 | 1990.0 | 0.562094358462 | |
| 1991.0 | 87955.0 | 76351.0 | 46.5 | 164306.0 | 13061.0 | 463.0 | 177830.0 | 0.0 | 51177.0 | 45334.0 | 47.0 | 96511.0 | 9569.0 | 353.0 | 263.0 | 106696.0 | 46.0 | 1991.0 | 0.599988753304 | |
| 1992.0 | 92425.0 | 80650.0 | 46.6 | 173075.0 | 13078.0 | 354.0 | 186507.0 | 0.0 | 52253.0 | 45191.0 | 46.4 | 97444.0 | 9269.0 | 321.0 | 360.0 | 107394.0 | 45.0 | 1992.0 | 0.575817529637 | |
| 1993.0 | 99955.0 | 74788.0 | 42.8 | 174743.0 | 13635.0 | 361.0 | 188739.0 | 0.0 | 53231.0 | 45111.0 | 45.9 | 98342.0 | 10630.0 | 442.0 | 332.0 | 109746.0 | 44.0 | 1993.0 | 0.581469648562 | |
| 1994.0 | 107233.0 | 82624.0 | 43.5 | 189857.0 | 15774.0 | 459.0 | 206090.0 | 0.0 | 56066.0 | 45610.0 | 44.9 | 101676.0 | 11095.0 | 499.0 | 317.0 | 113587.0 | 43.0 | 1994.0 | 0.551152409142 | |
| 1995.0 | 123958.0 | 88419.0 | 41.6 | 212377.0 | 15409.0 | 452.0 | 228238.0 | 0.0 | 55739.0 | 45680.0 | 45.0 | 101419.0 | 11712.0 | 387.0 | 316.0 | 113834.0 | 43.0 | 1995.0 | 0.498751303464 | |
| 1996.0 | 106892.0 | 88295.0 | 45.2 | 195187.0 | 15161.0 | 665.0 | 211013.0 | 0.0 | 61104.0 | 48541.0 | 44.3 | 109645.0 | 11410.0 | 362.0 | 279.0 | 121696.0 | 43.0 | 1996.0 | 0.576722761157 | |
| 1997.0 | 120445.0 | 94812.0 | 44.0 | 215257.0 | 16546.0 | 621.0 | 232424.0 | 0.0 | 61708.0 | 50276.0 | 44.9 | 111984.0 | 11414.0 | 394.0 | 277.0 | 124069.0 | 44.0 | 1997.0 | 0.533804598492 | |
| 1998.0 | 135483.0 | 107579.0 | 44.3 | 243062.0 | 17107.0 | 720.0 | 260889.0 | 0.0 | 80289.0 | 67228.0 | 45.6 | 147517.0 | 14766.0 | 561.0 | 298.0 | 163142.0 | 44.0 | 1998.0 | 0.625331079501 | |
| 1999.0 | 149825.0 | 120362.0 | 44.5 | 270187.0 | 17761.0 | 863.0 | 288811.0 | 0.0 | 83906.0 | 69579.0 | 45.3 | 153485.0 | 14732.0 | 420.0 | 448.0 | 169085.0 | 44.0 | 1999.0 | 0.585452077656 | |
| 2000.0 | 164795.0 | 131131.0 | 44.3 | 295926.0 | 18292.0 | 797.0 | 315015.0 | 0.0 | 85068.0 | 72426.0 | 46.0 | 157494.0 | 17413.0 | 548.0 | 524.0 | 175979.0 | 45.0 | 2000.0 | 0.558636890307 | |
| 2001.0 | 177511.0 | 148997.0 | 45.6 | 326508.0 | 18280.0 | 944.0 | 345732.0 | 0.0 | 87600.0 | 78435.0 | 47.2 | 166035.0 | 16871.0 | 584.0 | 480.0 | 183970.0 | 46.0 | 2001.0 | 0.532117362581 | 2424.0 |
| 2002.0 | 184245.0 | 150200.0 | 44.9 | 334445.0 | 20904.0 | 1144.0 | 356493.0 | 0.0 | 86971.0 | 80360.0 | 48.0 | 167331.0 | 15451.0 | 1133.0 | 460.0 | 184375.0 | 47.0 | 2002.0 | 0.517191080891 | 2531.0 |
| 2003.0 | 188941.0 | 153500.0 | 44.8 | 342441.0 | 22602.0 | 1000.0 | 366043.0 | 0.0 | 87893.0 | 81130.0 | 48.0 | 169023.0 | 16574.0 | 994.0 | 421.0 | 187012.0 | 47.0 | 2003.0 | 0.510901724661 | 2766.0 |
| 2004.0 | 189536.0 | 167407.0 | 46.9 | 356943.0 | 23975.0 | 1221.0 | 382139.0 | 0.0 | 84270.0 | 80020.0 | 48.7 | 164290.0 | 15695.0 | 1016.0 | 298.0 | 181299.0 | 48.0 | 2004.0 | 0.47443207838 | 2771.0 |
| 2005.0 | 207867.0 | 182866.0 | 46.8 | 390733.0 | 25553.0 | 1222.0 | 417508.0 | 0.0 | 74637.0 | 69169.0 | 48.1 | 143806.0 | 12951.0 | 716.0 | 245.0 | 157718.0 | 48.0 | 2005.0 | 0.377760426148 | 2523.0 |
| 2006.0 | 221784.0 | 204183.0 | 47.9 | 425967.0 | 25515.0 | 1151.0 | 452633.0 | 0.0 | 89823.0 | 83949.0 | 48.3 | 173772.0 | 20965.0 | 1149.0 | 519.0 | 196405.0 | 48.0 | 2006.0 | 0.433916660959 | 2581.0 |
| 2007.0 | 241347.0 | 214807.0 | 47.1 | 456154.0 | 27752.0 | 1049.0 | 484955.0 | 0.0 | 79526.0 | 77756.0 | 49.4 | 157282.0 | 24062.0 | 1047.0 | 508.0 | 182899.0 | 49.0 | 2007.0 | 0.377146333165 | 2776.0 |
| 2008.0 | 231588.0 | 224733.0 | 49.2 | 456321.0 | 27782.0 | 1209.0 | 485312.0 | 0.0 | 77502.0 | 80270.0 | 50.9 | 157772.0 | 25565.0 | 1240.0 | 647.0 | 185224.0 | 50.0 | 2008.0 | 0.38165963339 | 2576.0 |
| 2009.0 | 224912.0 | 231194.0 | 50.7 | 456106.0 | 25806.0 | 959.0 | 482871.0 | 0.0 | 82382.0 | 84967.0 | 50.8 | 167349.0 | 23116.0 | 1009.0 | 453.0 | 191927.0 | 50.0 | 2009.0 | 0.397470545964 | 2549.0 |
| 2010.0 | 241977.0 | 248249.0 | 50.6 | 490226.0 | 29059.0 | 992.0 | 520277.0 | 0.0 | 107791.0 | 111823.0 | 50.9 | 219614.0 | 22799.0 | 981.0 | 947.0 | 244341.0 | 50.0 | 2010.0 | 0.469636366782 | 2770.0 |
| 2011.0 | 247750.0 | 255832.0 | 50.8 | 503582.0 | 30467.0 | 1139.0 | 535188.0 | 0.0 | 108622.0 | 115883.0 | 51.6 | 224505.0 | 21356.0 | 823.0 | 1029.0 | 247713.0 | 51.0 | 2011.0 | 0.462852306106 | 3572.0 |
| 2012.0 | 268782.0 | 274033.0 | 50.5 | 542815.0 | 32799.0 | 1149.0 | 576763.0 | 0.0 | 121026.0 | 132129.0 | 52.2 | 253155.0 | 21951.0 | 860.0 | 822.0 | 276788.0 | 52.0 | 2012.0 | 0.479899022649 | 5461.0 |
| 2013.0 | 287831.0 | 283.781 | 49.6 | 571612.0 | 36034.0 | 1406.0 | 609052.0 | 0.0 | 133593.0 | 144242.0 | 51.9 | 277835.0 | 23468.0 | 847.0 | 798.0 | 302948.0 | 51.0 | 2013.0 | 0.497409088222 | 6128.0 |
| 2014.0 | 285096.0 | 293706.0 | 50.7 | 578802.0 | 35378.0 | 1063.0 | 615243.0 | 0.0 | 144621.0 | 156057.0 | 51.9 | 300677.0 | 23657.0 | 1072.0 | 626.0 | 326032.0 | 51.0 | 2014.0 | 0.529923948749 | 5086.0 |
| 2015.0 | 288335.0 | 301075.0 | 51.1 | 589410.0 | 39097.0 | 1140.0 | 629647.0 | 0.0 | 140969.0 | 157438.0 | 52.8 | 298407.0 | 25986.0 | 1074.0 | 512.0 | 325979.0 | 52.0 | 2015.0 | 0.517717070041 | 5821.0 |
