Year	% of cohort
1971	45.8802909851074
1975	57.4623718261719
1976	58.8163299560547
1977	65.4202728271484
1979	55.0055999755859
1980	54.7343482971191
1981	54.3939094543457
1982	54.0257682800293
1987	68.3394927978516
1991	54.7015113830566
1992	63.6715087890625
1993	63.4944686889648
2007	77.6392211914062
2009	59.9610290527344
2010	59.80078125
2011	73.6565017700195
2012	60.9860000610352
2014	54.6869697570801
2020	76.9431076049805