Year	% of relevant age group
1972	28.1898708343506
1973	28.9292697906494
1974	29.4064197540283
1975	30.0206604003906
1976	30.8656692504883
1977	32.105281829834
1978	32.562671661377
1979	32.9185981750488
1980	33.2320098876953
1981	34.2086410522461
1982	34.7721900939941
1983	34.7185516357422
1984	35.5365180969238
1985	35.3174018859863
1986	35.6605186462402
1987	34.8986587524414
1988	34.0572204589844
1989	34.1405792236328
1990	34.625171661377
1991	35.1511116027832
1992	34.9187812805176
1993	35.4835090637207
1994	34.4374504089355
1995	34.4727783203125
1996	35.2675094604492
1997	34.994758605957
1998	34.9010200500488
1999	35.1121292114258
2000	35.8463592529297
2001	37.470329284668
2002	38.9636917114258
2003	41.1646614074707
2004	42.5017509460449
2005	45.6386299133301
2006	47.485179901123
2007	48.7668991088867
2008	51.8036499023438
2009	55.6745910644531
2010	56.6336097717285
2011	56.2173309326172
2012	57.367618560791
2013	56.9909210205078
2014	58.3048515319824
2015	59.1643295288086
2016	60.5421600341797
2017	61.3433609008789
2018	62.303409576416
2019	62.7764015197754
2020	63.3875999450684
2021	64.4491195678711
2022	64.1663589477539