Year	% of relevant age group
1972	31.1195106506348
1973	31.3743095397949
1974	31.2448501586914
1975	32.1486587524414
1976	32.8444786071777
1977	33.9213714599609
1978	36.4190711975098
1979	37.1256217956543
1980	37.9147491455078
1981	38.5187492370605
1982	39.0337295532227
1983	39.9507789611816
1984	41.3422012329102
1985	42.3395881652832
1986	43.7272491455078
1987	44.4001312255859
1988	45.8230895996094
1989	47.1169509887695
1990	47.2882499694824
1991	48.2448692321777
1992	49.0468597412109
1993	49.5839004516602
1994	50.6189308166504
1995	51.5609397888184
1996	52.1505813598633
1997	52.2653694152832
1998	53.1614685058594
1999	54.0721702575684
2000	55.1862106323242
2001	57.3285789489746
2002	59.8085708618164
2003	59.9854507446289
2004	60.7910690307617
2005	62.1113510131836
2006	60.8440017700195
2007	60.2813301086426
2008	59.9411582946777
2009	61.2704887390137
2010	61.4594192504883
2011	63.0195999145508
2012	66.8343887329102
2013	63.812858581543
2014	63.0971908569336
2015	63.4208717346191
2016	63.758430480957
2017	63.3307609558105
2018	63.912410736084
2019	64.801887512207
2020	65.2667694091797
2021	67.9169311523438
2022	67.082649230957