Year	% of cohort
1972	19.3099498748779
1973	51.78662109375
1974	65.8160095214844
1975	60.7603912353516
1976	56.6687088012695
1977	75.4136581420898
1978	61.7137107849121
1979	73.4570770263672
1980	81.3935470581055
1982	83.2913284301758
1983	83.1930313110352
1984	82.6933898925781
1986	84.8302230834961
1987	84.5296630859375
1988	67.1171188354492
1989	68.0359115600586
1991	58.0107803344727
1992	72.5527496337891
2000	58.2897415161133
2001	59.5702018737793
2002	70.6562423706055
2003	63.3287086486816
2004	69.8639297485352
2006	70.8244094848633
2007	67.8531188964844
2009	65.743408203125
2010	61.5210914611816
2011	56.3024711608887
2012	60.2034683227539
2013	70.6142120361328
2014	62.009651184082
2015	59.5543785095215
2016	56.4833106994629
2017	57.8759498596191
2018	57.2664794921875
2019	63.5604591369629