Year	% of relevant age group
1975	101.40316
1976	101.24255
1977	99.70721
1978	98.45134
1981	95.58126
1998	107.29902
1999	100.80224
2000	96.16742
2001	97.70281
2005	95.95397
2015	96.48923
2016	96.4441
2017	95.73414
2018	96.92643