Year	% of relevant age group
1974	22.0694999694824
1975	22.6187000274658
1976	23.4459095001221
1977	24.6032600402832
1978	26.6633396148682
1979	27.3347396850586
1980	28.1902408599854
1981	29.0148391723633
1982	29.7357997894287
1983	30.7532005310059
1984	31.964469909668
1985	33.8766098022461
1986	35.8381500244141
1987	37.0376892089844
1988	39.0368995666504
1989	40.7635612487793
1990	42.8645401000977
1991	43.7855491638184
1992	45.6730308532715
1993	47.5207901000977
1994	50.5837211608887
1995	51.9894218444824
1996	53.2590484619141
1997	54.3389282226562
1998	55.9102897644043
1999	57.4883804321289
2000	58.9746284484863
2001	60.1186218261719
2002	62.0277900695801
2003	64.0448226928711
2004	64.4328231811523
2005	65.4643707275391
2006	64.6651916503906
2007	65.4452285766602
2008	65.6904296875
2009	67.3673706054688
2010	66.2421798706055
2011	68.4401931762695
2012	73.8621978759766
2013	68.4993209838867
2014	67.3815536499023
2015	67.4872970581055
2016	67.5900726318359
2017	67.2590789794922
2018	67.6915512084961
2019	68.5959167480469
2020	69.3476028442383
2021	71.8249588012695
2022	71.9479522705078