Year	% of relevant age group
1970	105.2896
1971	105.2889
1972	101.5281
1973	99.98056
1980	99.67254
1981	99.81945
1982	99.84448
1983	99.0423
1984	98.86485
1985	98.91857
1986	98.60873
1987	99.2609
1988	98.43961
1989	97.74907
1990	96.95656
1991	96.93878
1992	97.90855
1993	98.47883
1994	99.08432
1995	99.60093
1996	99.70856
1997	100.0503
1998	99.855
1999	99.10816
2000	98.88455
2001	97.97589
2002	97.37928
2003	98.36266
2004	101.0174
2005	98.86905
2006	99.83326
2007	100.3588
2008	99.43274
2009	99.17247
2010	99.31756
2011	99.29977
2012	99.7216
2013	98.26306
2014	97.67725
2015	100.7079
2016	99.95897
2017	93.56875
2018	93.60495