Years Available: 2008–2018
Permanent Link: http://data.sagepub.com/sagestats/12333
General Notes: Industry code NAICS 52. A - symbol indicates the data was unavailable for publishing. National median gives the value for the "average" county for this metric, the 50th percentile of all counties reporting data. Noise infusion is applied to this data - it is a method of disclosure avoidance in which values for each establishment are perturbed prior to table creation by applying a random noise multiplier to the data for each company. See Source URL for details.