Year	% of cohort
1970	49.0633316040039
1971	48.4967002868652
1972	48.6171684265137
1973	47.2244300842285
1974	48.2776412963867
1975	49.7807693481445
1976	51.9192199707031
1977	54.9257316589355
1978	55.9067306518555
1979	56.0849609375
1980	56.1737403869629
1981	56.8039283752441
1982	57.8655586242676
1983	59.0732192993164
1984	59.7831916809082
1985	61.0498886108398
1986	62.6515502929688
1987	65.9851837158203
1988	65.8216934204102
1989	65.663330078125
1990	65.9759063720703
1991	65.9188537597656
1992	65.8818817138672
1993	66.5044326782227
1994	66.0279388427734
1995	67.1210021972656
1996	67.5173873901367
1997	68.1214218139648
1998	69.0171508789062
1999	69.4945678710938
2000	69.4310913085938
2001	72.1010513305664
2002	71.7341537475586
2003	72.071662902832
2004	72.9487609863281
2005	73.6462020874023
2006	74.3805923461914
2007	74.0319976806641
2008	75.4477310180664
2009	76.889518737793
2010	76.977897644043
2011	77.8155670166016
2012	77.6332015991211
2013	79.1272964477539
2014	84.6898498535156
2015	84.5529022216797
2016	83.3191909790039
2017	83.1659622192383
2018	83.9741287231445
2019	88.5610275268555
2020	89.1243515014648
2021	90.2083129882812