Year	% of relevant age group
1973	74.1675033569336
1974	74.9263534545898
1975	74.8760223388672
1976	74.1457138061523
1977	73.7445678710938
1978	74.0974426269531
1979	74.8732681274414
1980	74.0297775268555
1981	75.594612121582
1982	75.8023834228516
1983	74.8513031005859
1984	73.7733306884766
1985	74.5925674438477
1986	76.0740127563477
1987	74.310920715332
1988	74.0923004150391
1989	72.4475708007812
1990	74.1095123291016
1991	73.5589828491211
1992	73.2862014770508
1993	72.7206878662109
1994	72.9791412353516
1995	73.034553527832
1996	73.960578918457
1997	74.7126998901367
1998	76.7930374145508
1999	77.4759521484375
2000	76.9949111938477
2001	76.970329284668
2002	77.878303527832
2003	78.2153701782227
2004	77.9817733764648
2005	78.0848236083984
2006	79.9453735351562
2007	80.1707382202148
2008	80.9326019287109
2009	81.43701171875
2010	82.0636978149414
2011	82.0828170776367
2012	83.9194488525391
2013	83.7016525268555
2014	83.8409805297852
2015	84.2715301513672
2016	84.2902297973633
2017	84.2404327392578
2018	84.2976379394531
2019	84.5841827392578
2020	84.1357192993164
2021	84.5374374389648