For further information, please refer to the US Census Bureau's Annual Services release, online at http://www.census.gov/services/.
Source: US. Bureau of the Census
Release: Annual Services Survey
US. Bureau of the Census, Purchased Repairs and Maintenance to Buildings, Structures, and Offices for Internet Publishing and Broadcasting and Web Search Portals, All Establishments, Employer Firms (DISCONTINUED SERIES) [EXPBSOEF51913ALLEST], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/EXPBSOEF51913ALLEST/, July 30, 2015.