Year	% of relevant age group
1971	76.57023
1972	75.44475
1974	71.68918
1975	73.29304
1976	87.61804
1977	86.29531
1978	85.79661
1979	88.66742
1980	86.14084
1981	90.50843
1991	94.17185
1992	90.22788
1999	89.21427
2000	89.41901
2001	84.0501
2002	83.25597
2003	84.24508
2004	83.45154
2005	89.50241
2006	102.21849
2007	105.45119
2008	108.20623
2009	107.6767
2011	107.20216
2012	108.29383
2013	106.15057
2014	102.35135
2015	107.16632
2017	101.85673
2018	99.92681
2019	103.34971