Year	% of relevant age group
1970	92.63282
1971	92.72436
1972	92.67188
1973	93.46973
1974	89.24238
1975	96.33237
1976	99.12237
1977	97.93014
1978	97.8683
1979	100.5179
1980	97.56126
1981	96.07301
1982	96.97468
1983	98.74622
1984	97.8107
1985	95.49506
1986	101.1057
1987	98.51942
1988	98.28099
1989	96.23694
1990	96.30832
1991	97.56541
1992	96.81289
1993	95.69281
1994	94.42898
1995	93.36268
1996	94.46614
1997	94.78808
1998	96.13911
1999	98.74767
2000	99.66597
2001	99.90628
2002	102.7743
2003	102.845
2004	102.8696
2005	104.4342
2006	104.422
2007	105.5351
2008	104.2895
2009	104.782
2010	105.6892
2011	106.5144
2012	106.4458
2013	105.0085
2014	104.943
2015	103.5328
2016	102.6528
2017	103.85
2018	102.5753