Year	% of relevant age group
1970	117.7625
1971	118.6917
1972	119.8919
1973	121.4074
1974	122.1848
1975	123.5047
1976	123.9582
1977	124.4673
1978	123.4213
1979	125.315
1980	123.8741
1981	124.2092
1982	122.5178
1983	124.8573
1984	126.6529
1985	125.9761
1986	123.7759
1987	119.6587
1988	118.9654
1989	116.3515
1990	117.6105
1991	113.7887
1992	112.7921
1993	112.9645
1994	112.1648
1995	111.8698
1996	110.6005
1997	110.0973
1998	110.6937
1999	111.1956
2000	112.4051
2001	113.4266
2002	114.3854
2003	114.7966
2004	113.2202
2005	114.2417
2006	112.6914
2007	112.6144
2008	111.2538
2009	106.7813
2010	107.6678
2011	106.0931
2012	105.1712
2013	104.1715
2014	102.7357
2015	102.5169
2016	103.6044
2017	102.6581
2018	103.2741