Year	% of relevant age group
1970	111.8995
1971	112.7942
1972	113.4537
1973	115.046
1974	114.8676
1975	116.0642
1976	115.9943
1977	116.537
1978	115.0877
1979	117.0756
1980	115.7311
1981	115.5583
1982	114.0861
1983	116.7094
1984	118.3786
1985	118.4563
1986	117.0744
1987	113.9586
1988	113.5607
1989	111.6419
1990	113.1975
1991	109.3179
1992	108.7283
1993	108.8127
1994	108.4789
1995	108.0996
1996	106.9674
1997	106.4485
1998	107.4514
1999	108.0679
2000	108.7857
2001	109.5403
2002	111.1334
2003	114.7179
2004	112.8221
2005	113.0465
2006	111.6642
2007	112.6415
2008	112.0722
2009	107.0734
2010	108.4915
2011	106.2672
2012	105.0877
2013	104.1468
2014	102.0699
2015	101.875
2016	103.0532
2017	101.4069
2018	101.7823