Year	% of cohort
1976	96.2794036865234
1977	93.3768005371094
1978	89.5220184326172
1982	92.0550231933594
2000	94.1953201293945
2005	98.257438659668
2006	98.7813415527344
2007	98.1155700683594
2012	98.1786193847656
2013	92.8984985351562
2016	96.3660278320312
2020	96.3937683105469