Humanities Indicators
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IV-9d: Numbers and Revenues of Not-for-Profit (NFP) Humanities Museum Organizations, 1989–2012* (Adjusted for Inflation)

* Organizations whose gross receipts were $50,000 or more. 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.” Shares may not add to 100%, due to rounding.

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;, accessed 4/6/2015).

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