Year	% of relevant age group
1971	43.6321182250977
1972	44.3394813537598
1973	44.9723281860352
1974	45.9797096252441
1975	46.8754081726074
1976	47.6614990234375
1977	48.9867401123047
1978	50.2610397338867
1979	52.6165885925293
1980	53.229621887207
1981	54.705940246582
1982	55.6821708679199
1983	56.2309417724609
1984	59.3056182861328
1985	55.7372512817383
1986	55.3184394836426
1987	53.9497985839844
1988	52.4199104309082
1989	50.7954902648926
1990	51.8595504760742
1991	52.6319808959961
1992	51.5099983215332
1993	52.728588104248
1994	51.3385696411133
1995	51.6574401855469
1996	51.8213195800781
1997	51.1529388427734
1998	49.7822113037109
1999	49.6071510314941
2000	49.3680686950684
2001	51.451488494873
2002	53.1039886474609
2003	54.6593704223633
2004	55.8810882568359
2005	58.5067481994629
2006	60.7862396240234
2007	62.6231498718262
2008	65.8463821411133
2009	69.5091094970703
2010	69.2572479248047
2011	68.2199096679688
2012	67.8805389404297
2013	67.5844421386719
2014	67.4794692993164
2015	67.1822509765625
2016	67.4874267578125
2017	68.5060272216797
2018	69.8282623291016
2019	70.4422607421875
2020	71.4469833374023
2021	72.3050308227539