Year	% of cohort
1995	95.4646911621094
1998	98.0698089599609
1999	98.4824523925781
2000	98.512336730957
2001	98.23046875
2002	97.3283309936523
2003	98.1506195068359
2004	98.6034393310547
2005	96.2368621826172
2006	97.5691375732422
2007	98.0575790405273
2008	98.3786468505859
2009	97.501220703125
2010	97.1143264770508
2011	96.9785385131836
2012	96.5819320678711
2013	97.6400527954102
2014	97.9673233032227
2015	99.2039566040039
2016	99.4102401733398
2017	99.7173919677734
2018	99.4543685913086
2019	99.7733306884766
2020	99.7202606201172
2021	99.6509475708008