Year	% of cohort
1978	13.0125102996826
1979	19.2227993011475
1980	23.1200103759766
1981	20.8437690734863
1982	14.1448202133179
1984	30.0968704223633
1985	34.3397102355957
1986	39.8966217041016
1987	44.7272605895996
1989	51.2771301269531
2001	89.0279235839844
2002	83.9872131347656
2003	87.4887237548828
2004	85.0757904052734
2005	87.5124130249023
2006	86.1223373413086
2007	85.7390365600586
2008	83.2540588378906
2009	85.1086578369141
2010	89.3066329956055
2012	91.4005737304688
2013	90.6368408203125
2014	88.9824295043945
2015	90.061393737793
2019	88.7394866943359
2020	96.7806167602539