Year	% of relevant age group
1972	39.1077194213867
1973	39.7356414794922
1974	39.7706604003906
1975	39.6422309875488
1976	39.4044914245605
1977	39.8376693725586
1978	40.1417999267578
1979	41.5578918457031
1980	40.3984718322754
1981	40.0853691101074
1982	40.3149909973145
1983	40.4426612854004
1984	41.0862884521484
1985	40.9796409606934
1986	39.9611206054688
1987	39.3783493041992
1988	38.0339584350586
1989	41.1486015319824
1990	40.4703903198242
1991	41.9468383789062
1992	42.0402183532715
1993	43.6446990966797
1994	44.5879211425781
1995	45.3774795532227
1996	45.6188011169434
1997	46.1812705993652
1998	47.4094200134277
1999	47.3775215148926
2000	47.644458770752
2001	48.2162017822266
2002	49.6387596130371
2003	51.1603889465332
2004	52.9027214050293
2005	54.0125694274902
2006	55.2254104614258
2007	54.7762489318848
2008	55.0729789733887
2009	57.8027191162109
2010	58.9203987121582
2011	60.2900810241699
2012	60.9803199768066
2013	60.9477195739746
2014	60.9060516357422
2015	61.5014190673828
2016	62.2067794799805
2017	62.8813285827637
2018	62.5385284423828
2019	62.3510093688965
2020	62.8724517822266
2021	64.4541778564453