Year	% of cohort
1974	63.4171905517578
1979	76.7900238037109
1980	59.9667205810547
1981	64.420280456543
1982	78.6720504760742
1983	67.3750762939453
1990	80.1900787353516
1991	77.9878082275391
1992	71.4194793701172
1993	72.6561126708984
2010	75.165283203125
2011	63.3658790588379
2012	74.8889083862305
2013	71.4596405029297
2014	72.6599731445312
2015	80.9732971191406
2016	69.8715209960938
2017	58.2922286987305
2018	74.8163604736328