United States - Sources of Revenue: Marketing Research for Advertising Agencies, All Establishments, Employer Firms was 492.00000 Mil. of $ in January of 2021, according to the United States Federal Reserve. Historically, United States - Sources of Revenue: Marketing Research for Advertising Agencies, All Establishments, Employer Firms reached a record high of 907.00000 in January of 2013 and a record low of 492.00000 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Sources of Revenue: Marketing Research for Advertising Agencies, All Establishments, Employer Firms - last updated from the United States Federal Reserve on April of 2024.