Year	% of relevant age group
1972	54.7508506774902
1973	55.1652717590332
1974	55.697208404541
1975	56.7650299072266
1976	57.5019607543945
1977	58.5941200256348
1978	59.9169387817383
1979	61.2750282287598
1980	61.6435203552246
1981	62.7869682312012
1982	63.5312690734863
1983	63.5876083374023
1984	65.2539367675781
1985	62.6494407653809
1986	62.4009208679199
1987	61.5203895568848
1988	60.525951385498
1989	59.3163986206055
1990	59.9761695861816
1991	60.2934417724609
1992	59.5337104797363
1993	60.1605186462402
1994	59.138988494873
1995	59.1966018676758
1996	59.5417289733887
1997	59.1252784729004
1998	58.2819786071777
1999	58.2883186340332
2000	58.5844802856445
2001	60.3666496276855
2002	61.6307792663574
2003	62.5823707580566
2004	63.8283081054688
2005	66.1210632324219
2006	68.9941864013672
2007	68.6025772094727
2008	68.3690567016602
2009	71.1737670898438
2010	70.9203796386719
2011	70.9907073974609
2012	70.3142471313477
2013	70.1950988769531
2014	70.0846710205078
2015	70.087516784668
2016	70.1420974731445
2017	70.3994674682617
2018	71.1335983276367
2019	71.4984664916992
2020	72.2257614135742
2021	72.8995208740234