Year	% of cohort
1977	58.8261489868164
1978	55.0425109863281
1979	55.1872596740723
1980	40.9926414489746
1981	55.4777183532715
1982	55.3947792053223
1983	54.4449310302734
1984	54.1588706970215
1985	53.8937683105469
1986	55.012321472168
2016	99.616813659668
2017	99.8937911987305
2018	99.6182708740234
2019	99.2301330566406
2020	99.5588684082031
2021	99.8011703491211