Year	% of cohort
1994	86.4044570922852
1995	87.9508514404297
1996	88.6145706176758
1997	88.5376205444336
1998	88.2717514038086
1999	88.9268264770508
2000	89.7603225708008
2001	90.7831192016602
2002	90.9630813598633
2003	90.4788284301758
2004	90.6141510009766
2005	91.17236328125
2006	91.6791610717773
2007	91.9810791015625
2008	92.3375701904297
2009	92.9792175292969
2010	93.3587417602539
2011	93.5782165527344
2012	93.3374099731445
2013	92.9891662597656
2014	94.0670928955078
2015	94.2870407104492
2016	94.4846801757812
2017	94.736686706543
2018	95.0836181640625
2019	95.3164825439453
2020	95.2480087280273
2021	95.4179916381836