Year	% of relevant age group
1970	44.8409309387207
1971	44.8507995605469
1972	45.5562400817871
1973	46.1324615478516
1974	46.5091705322266
1975	47.851131439209
1976	48.6879081726074
1977	50.5691413879395
1978	52.212100982666
1979	54.2084197998047
1980	55.0704383850098
1981	56.0717315673828
1982	56.7132987976074
1983	56.7288398742676
1984	58.9067687988281
1985	56.1273994445801
1986	55.9528884887695
1987	54.940299987793
1988	54.2372283935547
1989	53.1942710876465
1990	54.2031898498535
1991	54.9984893798828
1992	54.321418762207
1993	55.3687705993652
1994	54.4831314086914
1995	54.4624290466309
1996	54.8697509765625
1997	54.7181015014648
1998	54.0103416442871
1999	54.5521812438965
2000	54.5740013122559
2001	55.9974784851074
2002	57.0211906433105
2003	57.7473411560059
2004	58.7412986755371
2005	60.4219093322754
2006	63.2856101989746
2007	62.8599014282227
2008	63.2626495361328
2009	66.6317596435547
2010	66.0412063598633
2011	66.5994491577148
2012	67.1108627319336
2013	67.1211166381836
2014	67.4043502807617
2015	67.5360488891602
2016	67.9087219238281
2017	68.192253112793
2018	68.706672668457
2019	68.5612564086914
2020	69.0994262695312
2021	69.8326187133789