Select a chart to display. Charts summarize data by year. For detailed data see the Query . The source of the data is described in each chart. Note that the number of states reporting (demand) or institutions reporting (supply) in a given year will impact total numbers.
Database Updated: 6/6/2024 11:15:00 AM2023 Data Added (2/24/2024)
Questions about the site can be addressed to Michael Spiess (California State University, Chico). Click here to report a data error.