Year	% of cohort
1993	50.4361915588379
1998	72.1865234375
1999	75.0903625488281
2003	57.0121994018555
2005	68.4517288208008
2009	79.7528610229492
2011	83.5635528564453
2012	94.8122787475586
2013	82.8376770019531
2014	96.3819122314453
2015	87.3734436035156
2016	83.935546875
2017	84.3487319946289
2018	94.8599090576172
2019	89.3094711303711
2020	63.6945190429688