Year	% of cohort
1972	34.730899810791
1973	44.4871597290039
1974	32.2167701721191
1975	25.0944595336914
1976	20.1636295318604
1977	22.7585296630859
1978	27.089750289917
1979	29.4471893310547
1980	39.1542015075684
1981	41.1003494262695
1982	36.5582695007324
1983	36.7983512878418
1984	41.0668983459473
1985	35.7628784179688
1986	38.7632484436035
1987	41.0446281433105
1988	35.6810913085938
1989	39.9790916442871
1990	42.2762298583984
1991	44.0295486450195
1992	39.8616905212402
1993	58.1983604431152
1994	54.0833396911621
1995	41.9939117431641
1996	47.7829093933105
1997	50.7753715515137
1998	46.2510414123535
1999	52.4474487304688
2000	47.5133590698242
2001	50.851619720459
2002	58.0675582885742
2003	49.6138000488281
2004	49.2346496582031
2005	55.2220306396484
2006	37.8253211975098
2007	54.8128890991211
2008	47.4846305847168
2009	61.831600189209
2010	55.6013793945312
2011	53.8253593444824
2012	47.6984901428223
2013	57.9681015014648
2014	57.0232887268066
2015	59.4075889587402
2022	61.7650299072266