jumped by 3% to 12% over this 10-year period
The source of the data for these claims and Figure 1 is "JobsEQ": https://www.chmura.com/software. The figure shows an annual average growth rate of technology firms of 5% (compounding to 60% over ten years), which is strong, particularly for a state like Vermont, but not impossible. The scaling of the axis makes it look more dramatic. I originally thought that this was "not impossible" (though obviously very suspicious) based on state-level growth rates for venture-backed startups. However, the 'Relative Growth' analysis below clarifies that this is well outside the bounds of possibility at the state level for the technology sector as a whole for any prolonged period.
The Business Dynamics Statistics data from the U.S. Census is the standard data source for entry and exit and is available at the state-NAICS2 level from 1978 to 2019 (an update is due). There are numerous well-documented issues with using BDS, including that it measures establishments, not firms, and that the Census restricts access to sparse data. See the [[American Community Survey (ACS) Data]] page for related information.
==== Relative Growth ====
[[File:RelativeTechnologyEmployment_Vermont.PNG|right|500px]] It is also interesting to look at Vermont's relative growth in technology establishments and employment:
* The data was retrieved in bulk from https://www.census.gov/data/datasets/time-series/econ/bds/bds-datasets.html and downloaded by sector and state from 1978 to 2020.
* State codes are available in https://www2.census.gov/programs-surveys/bds/technical-documentation/label_state.csv