Current Term Enrollment Estimates, published every December and May by the National Student Clearinghouse Research Center, include national enrollment estimates by institutional sector, state, enrollment intensity, age group, and gender. Enrollment estimates are adjusted for Clearinghouse data coverage rates by institutional sector, state, and year. As of spring 2014, postsecondary institutions actively submitting enrollment data to the Clearinghouse account for 96 percent of enrollments at U.S. Title IV, degree-granting institutions. Most institutions submit enrollment data to the Clearinghouse several times per term, resulting in highly current data. Moreover, since the Clearinghouse collects data at the student level, it is possible to report an unduplicated headcount, which avoids double-counting students who are simultaneously enrolled at multiple institutions. In spring 2014, overall postsecondary enrollments decreased 0.8% from the previous spring. Data shows enrollments decreased among four-year for-profit institutions (-4.9 percent) and two-year public institutions (-2.7 percent). However, enrollments increased slightly among four-year public institutions (+0.7%) and four-year private nonprofit institutions (+2.0%).