Year	% of relevant age group
1970	37.0142288208008
1971	36.453441619873
1972	37.0658416748047
1973	37.7187118530273
1974	38.1993103027344
1975	38.9745292663574
1976	39.7793312072754
1977	40.9893188476562
1978	41.5955200195312
1979	41.9311599731445
1980	42.2564811706543
1981	43.3078994750977
1982	43.7548484802246
1983	43.0627593994141
1984	43.5088310241699
1985	43.1689414978027
1986	43.4174499511719
1987	42.5219802856445
1988	41.650318145752
1989	41.4699783325195
1990	42.0680694580078
1991	42.3309593200684
1992	41.9801902770996
1993	42.3590507507324
1994	41.2081985473633
1995	41.1960716247559
1996	41.8133201599121
1997	41.5371589660645
1998	41.2927703857422
1999	41.4497299194336
2000	42.5019187927246
2001	44.6446914672852
2002	46.4541397094727
2003	48.6683082580566
2004	49.8410301208496
2005	52.7078704833984
2006	54.0927696228027
2007	55.3019599914551
2008	57.8643989562988
2009	61.0687103271484
2010	61.714729309082
2011	61.3886299133301
2012	61.7843208312988
2013	60.6403388977051
2014	61.3778610229492
2015	61.7072792053223
2016	62.9876708984375
2017	63.7034683227539
2018	64.8412628173828
2019	65.3977890014648
2020	66.1033401489258
2021	67.0061798095703
2022	66.7105026245117