Year	% of cohort
1978	18.0935897827148
1979	24.584529876709
1980	27.8466396331787
1981	25.1966495513916
1982	26.903039932251
1984	37.7397804260254
1985	51.376091003418
1986	50.7410888671875
1987	53.816291809082
1989	60.1907501220703
2001	91.7945327758789
2002	87.1541595458984
2003	90.9426879882812
2004	89.6424179077148
2005	90.4645767211914
2006	89.6939086914062
2007	89.6685028076172
2008	87.8881988525391
2009	88.3752365112305
2010	92.1483612060547
2012	93.6190338134766
2013	92.7593536376953
2014	91.883056640625
2015	92.6949310302734
2019	91.5455627441406
2020	97.4799575805664