Year	% of relevant age group
1973	47.3203086853027
1974	46.7817916870117
1975	48.849250793457
1976	50.3261413574219
1977	51.128360748291
1978	61.4767799377441
1979	52.0916404724121
1980	50.5812492370605
1981	50.7579383850098
1982	49.6617202758789
1983	49.950870513916
1984	51.961498260498
1985	53.6515502929688
1986	54.1996688842773
1987	55.8751983642578
1988	55.4673500061035
1990	56.7356414794922
1991	55.3473510742188
1999	49.1237907409668
2000	50.3857307434082
2003	57.1198310852051
2004	59.1431694030762
2006	51.4517784118652
2007	54.8315696716309
2008	71.2364501953125
2009	71.067626953125
2010	72.6221771240234
2011	71.0284576416016
2012	75.0696487426758
2014	73.6742401123047
2015	74.5130615234375
2016	73.3813705444336
2017	68.2125701904297
2018	64.431770324707
2019	65.4423599243164
2020	66.4580001831055
2021	68.7343215942383
2022	69.4347381591797