Source: US. Bureau of the Census
Release: Annual Services Survey
For further information, please refer to the US Census Bureau's Annual Services release, online at http://www.census.gov/services/.
US. Bureau of the Census, Defined Contribution Plans for Architectural, Engineering, and Related Services, All Establishments, Employer Firms [EXPDCPEF5413ALLEST], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/EXPDCPEF5413ALLEST, December 8, 2016.