Year	% of relevant age group
1972	36.003288269043
1973	36.5671691894531
1974	36.9643287658691
1975	37.9892501831055
1976	38.8432197570801
1977	40.4561996459961
1978	42.1174812316895
1979	44.1770782470703
1980	45.2334098815918
1981	46.5136413574219
1982	47.4795913696289
1983	48.2297897338867
1984	50.8164100646973
1985	48.5472984313965
1986	48.550220489502
1987	47.7974815368652
1988	47.2274513244629
1989	46.0533905029297
1990	47.0198707580566
1991	47.8658294677734
1992	47.226619720459
1993	48.3050003051758
1994	47.5143203735352
1995	47.6269187927246
1996	48.1681594848633
1997	48.1455993652344
1998	47.6302185058594
1999	48.3457107543945
2000	48.2419815063477
2001	49.4674606323242
2002	50.2983093261719
2003	50.9236907958984
2004	51.7979202270508
2005	53.337459564209
2006	55.8705406188965
2007	55.810848236084
2008	57.167308807373
2009	60.8499183654785
2010	60.9426193237305
2011	61.3463592529297
2012	62.1148300170898
2013	62.6682090759277
2014	63.2876281738281
2015	63.752571105957
2016	64.5242004394531
2017	64.8527069091797
2018	65.3913192749023
2019	65.2753829956055
2020	65.7839736938477
2021	66.6321868896484