Year	% of cohort
1984	75.7845077514648
1985	76.3329467773438
1986	76.9308319091797
1987	76.4728393554688
1988	76.6613388061523
1989	76.9490509033203
1990	79.984001159668
1991	80.6519317626953
1992	82.6883926391602
1993	84.0896530151367
1994	85.0104675292969
1995	86.4387130737305
1996	87.2340087890625
1997	87.4418563842773
1998	87.1141967773438
1999	87.4288101196289
2000	88.2536697387695
2001	88.7640991210938
2002	88.9538116455078
2003	88.6427230834961
2004	88.3969268798828
2005	88.2129669189453
2006	88.3699188232422
2007	88.5328826904297
2008	89.9481201171875
2009	91.1423034667969
2010	91.3000411987305
2011	91.6290512084961
2012	90.4933776855469
2013	90.4187927246094
2014	91.8994216918945
2015	93.3576965332031
2016	94.7191467285156
2017	95.4254913330078
2018	95.6917114257812
2019	95.8169403076172
2020	95.747673034668
2021	95.7250518798828