Year	% of relevant age group
1970	53.2676315307617
1971	52.6528511047363
1972	52.3240203857422
1973	53.3496589660645
1974	53.1266784667969
1975	53.8404083251953
1976	54.2446098327637
1977	55.116268157959
1978	55.9785614013672
1979	56.1539688110352
1980	56.7699699401855
1981	57.5954399108887
1982	58.0058898925781
1983	58.0307884216309
1984	58.8917999267578
1985	59.1597785949707
1986	59.8210983276367
1987	59.2089500427246
1988	59.0425300598145
1989	59.2403411865234
1990	59.8370018005371
1991	60.3096618652344
1992	59.6381797790527
1993	59.8383102416992
1994	58.9375610351562
1995	58.4452095031738
1996	58.5429496765137
1997	58.0968399047852
1998	57.661979675293
1999	57.2616500854492
2000	57.8880996704102
2001	59.1058502197266
2002	60.1050605773926
2003	61.4047317504883
2004	62.44580078125
2005	64.6279296875
2006	66.7517929077148
2007	65.2772598266602
2008	64.5752487182617
2009	66.3206100463867
2010	67.7887496948242
2011	67.663932800293
2012	68.0188980102539
2013	67.2622985839844
2014	67.7389678955078
2015	67.8819885253906
2016	68.6180114746094
2017	68.9880676269531
2018	69.5115203857422
2019	69.9536590576172
2020	70.5274963378906
2021	71.1333312988281