Year	% of cohort
1970	40.1925315856934
1971	36.6148490905762
1972	41.335620880127
1973	37.1248893737793
1981	37.131519317627
1982	54.6408500671387
1983	55.016731262207
1984	55.0673217773438
1985	55.8348083496094
1986	60.6902198791504
1987	56.0439414978027
1988	55.9797782897949
1989	52.1793098449707
1990	55.2706108093262
1991	71.9673309326172
1992	59.0684509277344
1993	62.8491516113281
1994	57.7075881958008
1995	71.512336730957
1998	63.4347305297852
1999	66.5694274902344
2000	60.9313507080078
2001	69.4060363769531
2004	80.8726272583008
2005	80.8321075439453
2006	85.2229080200195
2007	84.7212219238281
2009	84.5323867797852
2010	87.3609619140625
2011	84.7118911743164
2012	71.9665069580078
2013	83.4970397949219
2014	88.2582092285156
2015	89.9809494018555
2016	91.6786270141602
2017	92.4318313598633
2018	95.0121612548828
2019	95.5560913085938
2020	97.2872009277344
2021	91.3313522338867