Year	% of relevant age group
1974	24.2365303039551
1975	24.6657390594482
1976	25.3733997344971
1977	26.3678493499756
1978	28.1800804138184
1979	28.7225303649902
1980	29.5143604278564
1981	30.4325199127197
1982	31.304370880127
1983	32.3972091674805
1984	33.7229499816895
1985	34.9230690002441
1986	36.3553085327148
1987	37.4764595031738
1988	38.5968894958496
1989	40.1284103393555
1990	40.952449798584
1991	42.2244987487793
1992	43.3047103881836
1993	44.250171661377
1994	45.7167701721191
1995	46.9230003356934
1996	47.701171875
1997	48.3809013366699
1998	49.6594200134277
1999	50.9626884460449
2000	52.2844390869141
2001	54.3497314453125
2002	56.8137283325195
2003	57.3494682312012
2004	58.499568939209
2005	60.1841087341309
2006	59.6690406799316
2007	59.7445602416992
2008	59.7539215087891
2009	61.2961883544922
2010	61.2020797729492
2011	62.9446182250977
2012	67.4404220581055
2013	63.3171882629395
2014	62.5809898376465
2015	63.2323188781738
2016	63.8331909179688
2017	63.7373313903809
2018	64.3608703613281
2019	65.0796203613281
2020	65.6395034790039
2021	67.8292999267578
2022	67.896240234375