Year	% of relevant age group
1970	91.61866
1971	91.67276
1972	91.99562
1973	92.73497
1974	88.71992
1975	95.435
1976	97.91211
1977	96.72371
1978	96.63569
1979	98.72043
1980	96.05166
1981	94.78479
1982	95.79221
1983	97.5538
1984	96.76006
1985	94.70078
1986	99.67459
1987	97.38247
1988	97.14583
1989	95.27449
1990	95.26518
1991	96.41917
1992	95.66077
1993	94.81879
1994	93.81666
1995	93.05448
1996	94.20895
1997	94.61151
1998	95.83505
1999	98.24145
2000	98.99263
2001	99.12513
2002	101.8509
2003	102.0189
2004	102.1694
2005	103.5506
2006	103.7466
2007	105.1851
2008	104.2516
2009	104.8667
2010	105.7989
2011	106.3583
2012	106.3478
2013	105.3379
2014	105.7657
2015	104.3908
2016	103.3202
2017	104.1981
2018	102.6685