Year	% of relevant age group
1971	41.2163696289062
1972	41.5673217773438
1973	42.0878105163574
1974	42.550479888916
1975	43.9125213623047
1976	44.8493003845215
1977	46.2512397766113
1978	48.120548248291
1979	48.9379806518555
1980	49.9696502685547
1981	51.8644218444824
1982	52.6220817565918
1983	52.3670501708984
1984	54.5250015258789
1985	50.7345390319824
1986	50.4376792907715
1987	49.4914283752441
1988	48.2698287963867
1989	46.7065391540527
1990	47.4602890014648
1991	48
1992	46.8456497192383
1993	47.7207717895508
1994	46.4283103942871
1995	46.5133514404297
1996	47.1782989501953
1997	46.9496803283691
1998	46.1560401916504
1999	47.0080299377441
2000	47.6724891662598
2001	50.4402503967285
2002	52.7994117736816
2003	54.3210792541504
2004	56.0330200195312
2005	58.6605606079102
2006	60.2618598937988
2007	62.5482406616211
2008	65.7761993408203
2009	68.6784515380859
2010	68.3575592041016
2011	68.0798797607422
2012	67.1845016479492
2013	66.9725112915039
2014	66.7943496704102
2015	66.6483917236328
2016	66.908821105957
2017	67.5389862060547
2018	68.6287994384766
2019	68.912712097168
2020	69.9487380981445
2021	70.7171325683594
2022	70.1039123535156