Year	% of cohort
1973	32.6012687683105
1986	49.7451515197754
1987	57.4780807495117
1994	54.9707984924316
1999	60.401611328125
2000	58.7137184143066
2001	63.536979675293
2013	81.4713287353516
2015	90.9444885253906
2016	87.1502838134766
2019	99.4098434448242
2020	99.8849563598633