Year	% of cohort
1971	54.840160369873
1972	60.8220481872559
1973	58.7336807250977
1974	63.165828704834
1975	65.8493194580078
1976	70.0096664428711
1977	75.4484786987305
1978	67.5811233520508
1979	72.6542587280273
1980	72.5909881591797
1981	73.2972564697266
1982	73.5004272460938
1983	82.2064819335938
1984	64.3457489013672
1986	75.5553665161133
1988	84.1172485351562
1989	73.2704925537109
1990	82.2614364624023
1991	62.4048118591309
1992	76.7993087768555
1995	68.7179107666016
1996	72.5519180297852
1997	71.3107376098633
1998	65.5199279785156
1999	61.3505401611328
2000	73.9837112426758
2001	71.0480499267578
2002	69.1330108642578
2003	73.5691299438477
2006	71.9759063720703
2007	74.7531890869141
2008	69.3525238037109
2009	64.2608032226562
2010	71.4707565307617
2011	64.5613784790039
2012	63.8742294311523
2013	64.4462966918945
2015	77.7540130615234
2021	65.5588302612305