Year	% of relevant age group
1972	47.100341796875
1973	47.8996200561523
1974	47.9166717529297
1975	48.7844390869141
1976	48.565601348877
1977	46.8940391540527
1978	48.0998916625977
1979	48.5243606567383
1980	49.0848808288574
1981	50.2075614929199
1982	51.2389907836914
1983	51.6049995422363
1984	53.5373115539551
1985	51.9101486206055
1986	52.3146514892578
1987	52.2570610046387
1988	52.0047798156738
1989	51.7733306884766
1990	52.6096382141113
1991	53.2665786743164
1992	52.9928703308105
1993	53.5561790466309
1994	53.0533294677734
1995	53.3262710571289
1996	53.7956809997559
1997	53.6717910766602
1998	53.7054710388184
1999	54.7422218322754
2000	55.6299514770508
2001	57.3134384155273
2002	59.2128105163574
2003	60.4482383728027
2004	61.7360305786133
2005	64.1141815185547
2006	65.056510925293
2007	65.9333114624023
2008	67.3448486328125
2009	70.4024200439453
2010	70.4225082397461
2011	70.4146575927734
2012	69.8671798706055
2013	68.8121871948242
2014	68.7019882202148
2015	68.6362075805664
2016	68.9218826293945
2017	69.5625991821289
2018	70.3915405273438
2019	70.5405731201172
2020	71.2368469238281
2021	71.7868881225586