Year	% of relevant age group
1971	66.72466
1972	65.3847
1974	63.39968
1975	63.50991
1976	73.57768
1977	74.66997
1978	73.01581
1979	75.838
1980	78.9525
1981	79.9606
1991	85.54676
1992	84.13051
1999	85.67779
2000	87.27503
2001	83.14389
2002	82.80734
2003	83.56521
2004	85.52669
2005	90.69976
2006	106.38018
2007	107.4329
2008	109.94567
2009	108.4107
2011	108.34126
2012	108.7886
2013	107.01279
2014	103.71497
2015	107.5096
2017	103.30403
2018	100.79903
2019	104.48673