Year	% of cohort
1984	75.7950134277344
1985	76.3457717895508
1986	76.9462738037109
1987	76.4926223754883
1988	76.6822509765625
1989	76.9695510864258
1990	79.9772109985352
1991	80.6406097412109
1992	82.6601867675781
1993	84.0556564331055
1994	84.9624404907227
1995	86.3806915283203
1996	87.1663513183594
1997	87.380012512207
1998	87.0543823242188
1999	87.3724670410156
2000	88.2053527832031
2001	88.7305221557617
2002	88.9178009033203
2003	88.6072082519531
2004	88.3687896728516
2005	88.1845626831055
2006	88.3407287597656
2007	88.5094299316406
2008	89.9173202514648
2009	91.1045379638672
2010	91.2754669189453
2011	91.6044769287109
2012	90.47705078125
2013	90.3938598632812
2014	91.8766784667969
2015	93.3341827392578
2016	94.6923599243164
2017	95.4032516479492
2018	95.669548034668
2019	95.7979583740234
2020	95.7229232788086
2021	95.6949462890625