Year	% of relevant age group
1971	60.5347099304199
1972	61.5217781066895
1973	62.6370391845703
1974	65.0203399658203
1975	65.4587478637695
1976	64.1118927001953
1977	63.024299621582
1978	63.8447799682617
1979	65.3040618896484
1980	65.1854629516602
1981	66.8477325439453
1982	67.0351181030273
1983	66.2445220947266
1984	65.1261520385742
1985	67.5173492431641
1986	70.106330871582
1987	67.6139297485352
1988	67.3790435791016
1989	65.2438430786133
1990	67.9606628417969
1991	67.6388626098633
1992	67.5537261962891
1993	66.7445983886719
1994	67.3906173706055
1995	67.7077713012695
1996	69.0965805053711
1997	70.0396575927734
1998	72.6766891479492
1999	73.3069076538086
2000	73.2155609130859
2001	73.8523788452148
2002	74.5693969726562
2003	75.2738723754883
2004	74.8718414306641
2005	74.9181137084961
2006	77.5021362304688
2007	77.374382019043
2008	78.7570190429688
2009	79.3794784545898
2010	80.1744079589844
2011	79.9461898803711
2012	80.8618774414062
2013	81.2987518310547
2014	81.8405914306641
2015	82.6592330932617
2016	82.685432434082
2017	82.7390670776367
2018	83.3988037109375
2019	83.5299072265625
2020	83.8556976318359