For details about this survey, please see our main report.
Note that for this visualization we excluded the observations that have no data about birth year, gender, state of residency at matriculation, or race/ethnicity. Such non-responses were not systematic (that is, they were not biased in any particular direction), hence this exclusion does not alter the distributions of any of the variables in any significant way but makes the visulization cleaner.
Observations in the main dataset: 22,757
Observations in the dataset used here: 16,247