Year	% of relevant age group
1974	28.6731090545654
1975	30.9480590820312
1976	34.6357803344727
1977	40.8081512451172
1978	40.7151107788086
1979	43.3830490112305
1980	43.3466491699219
1981	45.9970588684082
1982	47.8461112976074
1983	42.8711204528809
1984	40.0597114562988
1985	40.8014297485352
1986	39.2625617980957
1987	39.4092483520508
1988	32.3232612609863
1989	32.7630805969238
1990	34.2666397094727
1991	35.9511299133301
1992	37.1581916809082
1993	38.6441612243652
1994	40.7343292236328
1995	55.8199310302734
1996	66.8900680541992
1999	74.649543762207
2000	72.0529937744141
2001	71.91162109375
2002	77.1721496582031
2004	66.5315017700195
2005	66.1958465576172
2006	65.310791015625
2007	65.2664413452148
2008	70.6542663574219
2009	70.179328918457
2010	69.933349609375
2011	71.6921463012695
2012	75.3793792724609
2013	79.2459564208984
2014	77.3876190185547
2019	72.6938705444336
2021	81.7399978637695