Figure 2.

Enrollment, total expenditures in constant dollars, and expenditures as a percentage of the gross domestic product (GDP), by level of education: Selected years, 1965–66 through 2009–10

NOTE: Expenditure data for school years 2008 and 2009 (2008–09 and 2009–10) are estimated. Enrollment data for school year 2009 (2009–10) for elementary and secondary are projected. SOURCE: U.S. Department of Education, National Center for Education Statistics, Statistics of State School Systems, 1965–66 through 1969–70; Statistics of Public Elementary and Secondary School Systems, 1965 through 1980; Revenues and Expenditures for Public Elementary and Secondary Education, 1970–71 through 1986–87; Common Core of Data (CCD), “State Nonfiscal Survey of Public Elementary and Secondary Education,” 1985–86 through 2008–09; “National Public Education Financial Survey,” 1986–87 through 2007–08; Statistics of Nonpublic Elementary and Secondary Schools, 1970–71 through 1979–80; Private School Universe Survey (PSS), 1989–90 through 2007–08; Higher Education General Information Survey (HEGIS), Fall Enrollment in Institutions of Higher Education, 1965–66 through 1985–86; Financial Statistics of Institutions of Higher Education, 1965–66 through 1985–86; 1986–87 through 2009–10 Integrated Postsecondary Education Data System (IPEDS), “Fall Enrollment Survey” (IPEDS-EF:86–99), “Finance Survey” (IPEDS-F:FY87–99), and Spring 2001 through Spring 2010; and U.S. Department of Commerce, Bureau of Economic Analysis, National Income and Product Accounts Tables, retrieved September 17, 2010, from http://www.bea.gov/national/nipaweb/SelectTable.asp?Selected=N