Year	% of relevant age group
1970	104.4444
1971	105.5645
1972	106.7015
1973	107.9524
1974	108.5475
1975	109.9977
1976	110.4818
1977	111.2933
1978	110.562
1979	112.4343
1980	111.65
1981	112.0274
1982	110.9104
1983	112.6906
1984	113.6115
1985	113.3288
1986	112.0168
1987	109.3288
1988	108.7291
1989	106.7904
1990	107.8001
1991	104.6537
1992	104.1849
1993	104.4842
1994	104.3497
1995	104.5999
1996	104.0654
1997	104.8316
1998	105.2549
1999	105.1336
2000	107.0865
2001	108.5378
2002	110.3884
2003	112.9794
2004	111.7566
2005	112.617
2006	111.5989
2007	112.237
2008	112.4146
2009	108.7214
2010	109.509
2011	108.79
2012	107.9481
2013	107.3126
2014	106.2546
2015	105.9901
2016	106.8681
2017	105.4682
2018	105.6886