Year	% of cohort
1982	70.4506530761719
1983	71.8107681274414
1984	70.263313293457
1985	70.6167068481445
1986	78.9253463745117
1987	77.8055267333984
1988	74.7581481933594
1989	75.2840576171875
1997	73.5424575805664
1998	73.6789321899414
2001	79.2645416259766
2002	75.9771423339844
2003	75.3076477050781
2004	74.9109115600586
2005	73.9647598266602
2006	76.8399963378906
2007	78.4102478027344
2008	78.6771392822266
2016	94.8047409057617
2018	98.2384719848633
2019	97.7005615234375