Year	% of cohort
1970	73.3763427734375
1974	69.8878021240234
1975	74.503288269043
1996	69.928337097168
1998	89.4809799194336
1999	98.2738571166992
2000	93.3039779663086
2001	92.8442306518555
2002	85.5179824829102
2003	98.1445236206055
2004	90.6029968261719
2005	96.9924697875977
2006	96.4060821533203
2007	99.0762786865234
2008	95.867919921875
2009	97.623046875
2010	94.8102264404297
2011	98.222297668457
2012	96.1875076293945
2013	96.8192672729492
2014	96.0053787231445
2015	98.6010284423828
2016	95.4237213134766
2017	95.5122833251953
2018	95.0970611572266
2019	94.4143295288086
2020	96.8295593261719