Year	% of relevant age group
1997	105.4281
1998	104.7966
1999	104.9057
2000	104.943
2001	104.2614
2002	103.3613
2003	104.6798
2004	105.8757
2005	107.2554
2006	107.2483
2007	107.0721
2008	106.7652
2009	103.4013
2010	102.7538
2011	101.6058
2012	101.1568
2013	100.9457
2014	101.9437
2015	102.5524
2016	102.5078
2017	100.8168
2018	100.819