Year	% of relevant age group
1972	27.205099105835
1973	27.8126392364502
1974	27.8138694763184
1975	27.88205909729
1976	27.4807300567627
1977	26.9917907714844
1978	27.0688304901123
1979	26.9395809173584
1980	26.6043395996094
1981	26.8459205627441
1982	26.705659866333
1983	26.8447208404541
1984	26.8779792785645
1985	27.2462902069092
1986	27.2930297851562
1987	27.5019092559814
1988	27.4838008880615
1989	27.3752403259277
1990	27.2537307739258
1991	27.272439956665
1992	27.2662696838379
1993	27.0961799621582
1994	26.8663005828857
1995	26.9965496063232
1996	26.9843997955322
1997	27.1693992614746
1998	27.5896301269531
1999	27.4977397918701
2000	28.1072998046875
2001	29.0974197387695
2002	30.4614505767822
2003	31.9237194061279
2004	32.5947685241699
2005	33.3223915100098
2006	34.1085014343262
2007	35.1217803955078
2008	36.6349906921387
2009	36.187629699707
2010	38.7955513000488
2011	39.3539810180664
2012	39.5222396850586
2013	39.5199317932129
2014	39.8437995910645
2015	40.6692504882812
2016	41.3054504394531
2017	42.0998191833496
2018	42.6652984619141
2019	43.0559196472168
2020	43.4542083740234
2021	43.6151084899902