Year	% of cohort
1973	38.825700407203
1986	53.503686508104735
1987	61.954719543456996
1994	58.628341674804695
1999	61.98271914177824
2000	59.026103213144964
2001	61.850143828879375
2013	81.23950174037333
2014	92.81779967898156
2015	87.78307093250251
2016	87.571782656849
2019	98.49601177193858
2020	99.62442016601561