Year	% of relevant age group
1972	34.783748626709
1973	35.7918510437012
1974	35.6241912841797
1975	35.8369293212891
1976	35.2895698547363
1977	34.4947395324707
1978	34.8468818664551
1979	34.7592391967773
1980	34.3897590637207
1981	34.7065582275391
1982	34.0611801147461
1983	33.9231185913086
1984	34.1172294616699
1985	34.3786087036133
1986	34.3851318359375
1987	34.1177787780762
1988	34.2667007446289
1989	33.8722610473633
1990	33.5866889953613
1991	33.2714614868164
1992	33.02880859375
1993	32.7063293457031
1994	32.7389297485352
1995	32.9867897033691
1996	32.9740791320801
1997	33.1534194946289
1998	33.5623016357422
1999	33.4785003662109
2000	34.3292388916016
2001	35.7104301452637
2002	37.6079292297363
2003	39.3321304321289
2004	40.9107704162598
2005	41.4486312866211
2006	42.0952987670898
2007	42.9795799255371
2008	44.689079284668
2009	43.9907913208008
2010	46.1319313049316
2011	46.3933181762695
2012	46.3221092224121
2013	45.925968170166
2014	47.2600212097168
2015	47.4984588623047
2016	47.7169799804688
2017	47.9366912841797
2018	48.2821807861328
2019	48.3660583496094
2020	48.4254684448242
2021	48.6587295532227