| Year | Value | | 2017 | 116.64354631485 | | 2016 | 114.14155195667 | | 2015 | 114.01421785026 | | 2014 | 113.63917769363 | | 2013 | 111.53478984562 | | 2012 | 108.78402490035 | | 2011 | 104.5847543565 | | 2010 | 100 | | 2009 | 98.679104969991 | | 2008 | 93.130715131616 | | 2007 | 93.521568908118 | | 2006 | 89.55220542435 | | 2005 | 89.283817196305 |
|