Year	% of relevant age group
1971	121.5456
1972	127.65504
1973	137.59237
1974	143.46138
1975	146.36922
1976	148.0083
1977	148.36169
1981	117.61904
1982	136
1983	136.95824
1984	131.87255
1987	136.22089
1988	141.32808
1989	136.27987
1991	124.4545
1992	136.76678
1993	126.69198
1995	123.89663
1996	147.7378
1998	127.24796
1999	130.76435
2000	134.41403
2001	131.77574
2002	135.74081
2003	135.82495
2004	138.47946
2005	135.3088
2006	126.21956
2007	119.15907
2008	117.82565
2009	114.92899
2010	111.09273
2011	106.83158
2012	105.37534
2013	101.18937
2014	99.02327
2015	101.00341
2016	100.59583
2017	97.57618
2018	96.58226