Year	% of relevant age group
1971	115.6431
1972	116.7422
1973	118.1482
1974	118.5648
1975	120.274
1976	120.9067
1977	121.4127
1978	120.8271
1979	122.3235
1980	121.1736
1981	121.6357
1982	119.7574
1983	121.7255
1984	123.199
1985	122.6628
1986	120.5678
1987	116.5175
1988	115.9089
1989	113.5485
1990	114.3619
1991	110.718
1992	109.8353
1993	110.0373
1994	109.6055
1995	109.9965
1996	109.118
1997	109.6765
1998	109.9417
1999	109.7122
2000	111.7952
2001	113.1563
2002	114.8373
2003	115.3471
2004	114.1162
2005	115.5366
2006	114.1652
2007	114.5636
2008	114.367
2009	110.0604
2010	110.8645
2011	110.1069
2012	109.0379
2013	108.3735
2014	107.4616
2015	107.2008
2016	108.1075
2017	107.1824
2018	107.4866