Since 1983, this report has been generated from the Services Office's Student Enrollment Record Data Base. The Student Enrollment Record Data Base contains unit records for students enrolled during the fall in Minnesota's public and private post-secondary education institutions. Prior to 1983, the Basic Data Series was prepared from summary data that was supplied by individual post-secondary institutions. The first Basic Data Series was produced in 1974. Institutions are asked to provide unit records for students enrolled on the tenth day of fall term, or the institution's official fall reporting date. Institutions without distinct academic terms are asked to provide enrollments using the 3-month period, July 15 through October 15, as a proxy for tenth day data. Private post-secondary institutions are not required to report, but many do so voluntarily.