Year	% of relevant age group
1972	54.9910316467285
1973	55.5826683044434
1974	55.9399490356445
1975	57.5967292785645
1976	58.4163284301758
1977	60.5658912658691
1978	62.1904602050781
1979	64.1232070922852
1980	64.7887573242188
1981	65.5082702636719
1982	65.8270874023438
1983	65.1154632568359
1984	66.8821716308594
1985	63.6014404296875
1986	63.2445983886719
1987	61.9733009338379
1988	61.1404495239258
1989	60.239818572998
1990	61.2931709289551
1991	62.0411682128906
1992	61.3281211853027
1993	62.3452186584473
1994	61.3543510437012
1995	61.1905288696289
1996	61.4699211120605
1997	61.2027206420898
1998	60.305721282959
1999	60.6831398010254
2000	60.8298988342285
2001	62.4470291137695
2002	63.6606101989746
2003	64.4830017089844
2004	65.5923309326172
2005	67.4091262817383
2006	70.5974273681641
2007	69.8112182617188
2008	69.273681640625
2009	72.3324737548828
2010	71.0697326660156
2011	71.7783508300781
2012	72.0343704223633
2013	71.5078277587891
2014	71.4572677612305
2015	71.2621917724609
2016	71.239128112793
2017	71.4768218994141
2018	71.9676971435547
2019	71.794059753418
2020	72.3615264892578
2021	72.9813690185547