Year	% of cohort
1976	37.1108207702637
1988	37.6964797973633
1990	58.2924499511719
1994	33.3697090148926
1995	47.8782196044922
1996	63.2070617675781
1998	53.6823310852051
1999	58.880729675293
2000	58.3773803710938
2001	68.2234573364258
2002	56.5228118896484
2004	34.2458190917969
2005	40.8908882141113
2009	36.4170188903809
2010	57.3471908569336
2011	48.4059104919434
2012	59.1658096313477
2015	37.2480697631836
2016	30.9631099700928
2017	76.8701019287109