Year	% of cohort
1972	69.6967163085938
1973	84.8880462646484
1974	62.5264511108398
1975	62.6255416870117
1976	63.1451187133789
1977	64.9667434692383
1978	62.3669509887695
1979	65.3622589111328
1980	68.3525924682617
1981	72.9487533569336
1982	68.4336624145508
1983	66.1513900756836
1984	75.3827362060547
1985	69.8006134033203
1986	79.3523712158203
1987	77.2412261962891
1988	68.2798690795898
1989	75.3611068725586
1990	82.7339019775391
1991	73.3967590332031
1992	66.3233413696289
1993	87.0042419433594
1994	82.3627319335938
1995	71.0015563964844
1996	74.4299163818359
1997	81.2882919311523
1998	76.2484130859375
1999	80.7377624511719
2000	74.3005828857422
2001	79.7440719604492
2002	85.0437698364258
2003	68.6519393920898
2004	81.2076873779297
2005	80.0239105224609
2006	69.3816375732422
2007	88.7516479492188
2008	80.2048110961914
2009	84.8450698852539
2010	81.9438934326172
2011	84.0599670410156
2012	75.8423767089844
2013	85.5356903076172
2014	82.5438079833984
2015	89.4540786743164
2022	89.3419189453125