Year	% of relevant age group
1972	47.6795997619629
1973	48.8657913208008
1974	49.267391204834
1975	50.1457786560059
1976	50.375301361084
1977	51.2774085998535
1978	52.5780982971191
1979	53.358211517334
1980	53.3536911010742
1981	53.1975898742676
1982	53.227409362793
1983	52.6809692382812
1984	52.6417694091797
1985	52.9984092712402
1986	52.4630699157715
1987	52.4740715026855
1988	51.3688888549805
1989	54.5609283447266
1990	53.957160949707
1991	55.8142395019531
1992	54.858699798584
1993	55.7227096557617
1994	56.0265007019043
1995	56.4742889404297
1996	56.6874809265137
1997	56.4437408447266
1998	56.7859992980957
1999	56.5088310241699
2000	56.8138313293457
2001	56.8457794189453
2002	57.6150512695312
2003	59.3654899597168
2004	60.5528984069824
2005	61.265308380127
2006	62.7110481262207
2007	62.9619598388672
2008	63.3883399963379
2009	65.7685089111328
2010	66.8121566772461
2011	67.9895477294922
2012	68.2446365356445
2013	68.2375717163086
2014	68.6193237304688
2015	69.1197128295898
2016	70.0168533325195
2017	70.3717575073242
2018	69.9335784912109
2019	70.0170669555664
2020	69.9061584472656
2021	70.9457473754883