* Organizations whose gross receipts were $50,000 or more and which include, but are not limited to, humanities councils, scholarly societies in disciplines other than those addressed by the other categories, and academies. For more on these organizations, see “What Is a ‘Humanities Organization’?” Years are “circa” years, a concept developed by the collector of these data to compensate for the often substantial lag between the end of organizations’ fiscal year and their filing of IRS Form 990, the annual financial report required of all public charities—and the source of the data presented in this indicator. For more on circa years and the rationale for excluding organizations with gross receipts of less than $50,000, see “About the Data.”
** Number of years since recognized as “nonprofit” by the federal government.
Source: Original analysis by the Humanities Indicators of data culled from the Internal Revenue Service Form 990 Return Transaction Files by the Urban Institute’s National Center for Charitable Statistics. Revenues were adjusted for inflation using the Gross Domestic Product Implicit Price Deflators produced by the U.S. Department of Commerce’s Bureau of Economic Analysis (annual deflators, vintage 3/27/2015; http://research.stlouisfed.org/fred2/series/GDPDEF/downloaddata, accessed 4/6/2015).