Year % of relevant age group 1997 106.9936 1998 104.8541 1999 107.5295 2000 107.5203 2001 104.3646 2002 102.2443 2003 105.3625 2004 106.5515 2005 108.4766 2006 108.9722 2007 104.7684 2008 104.8668 2009 101.5097 2010 104.0577 2011 100.4256 2012 104.5196 2013 102.3351 2014 102.0653 2015 101.6282 2016 102.4402 2017 100.1225 2018 99.99876