Year	% of cohort
1971	75.6249465942383
1978	79.0029296875
1979	75.4583587646484
1980	64.8157424926758
1981	51.3877105712891
1982	49.7054100036621
1983	32.7929382324219
1984	43.1885986328125
1985	50.3884315490723
1986	72.5561828613281
1987	62.8005104064941
1988	57.008918762207
1989	65.5262985229492
1990	67.9197082519531
1991	46.8963394165039
1995	70.9745025634766
1999	48.7230186462402
2000	76.1087417602539
2002	68.3049468994141
2003	76.2545318603516
2004	75.2929382324219
2005	87.5619964599609
2007	75.9128875732422
2009	54.6054191589355
2010	55.3765106201172
2011	69.6424865722656
2012	63.9109802246094
2013	54.1749114990234
2020	60.8088302612305
2021	65.0664672851562