Year	% of relevant age group
1970	12.3734502792358
1971	12.7068796157837
1972	14.9387998580933
1973	17.8936195373535
1974	20.7459602355957
1975	22.6579494476318
1976	24.4654808044434
1977	29.2566699981689
1978	32.2907104492188
1979	31.9145793914795
1980	33.4049911499023
1981	32.955020904541
1982	34.8855781555176
1983	36.010871887207
1984	33.5112991333008
1985	32.63623046875
1986	31.383659362793
1987	31.3391304016113
1988	31.2101192474365
1989	37.461009979248
1990	32.3867607116699
1991	36.7881088256836
1992	40.5896911621094
1993	37.6481018066406
1994	38.0899200439453
1995	39.7612991333008
1998	39.4917411804199
1999	33.9647483825684
2000	32.2338600158691
2001	36.0983390808105
2002	33.8136901855469
2003	33.2084197998047
2004	34.0438499450684
2005	36.5180702209473
2006	41.7367515563965
2007	43.0862617492676
2009	44.6019287109375
2010	48.0828399658203
2011	47.4520416259766
2012	51.7690315246582
2013	57.4782791137695
2014	54.8256683349609
2015	50.4311714172363
2016	65.1800537109375
2017	71.3296737670898
2019	75.5917510986328