Year	% of cohort
1982	73.441780090332
1983	75.8822174072266
1984	74.1531219482422
1985	73.7304077148438
1986	78.8703384399414
1987	85.8979873657227
1988	74.9060897827148
1998	78.5236434936523
2001	83.0754165649414
2002	80.2332763671875
2003	79.6031188964844
2004	79.7654266357422
2005	78.1265487670898
2006	81.3518905639648
2007	82.4758911132812
2008	82.2256317138672
2016	96.4796371459961
2018	99.4029769897461
2019	98.5219879150391