Year Number 1996 100 1998 100 2000 99.0049743652344 2002 100 2003 100 2004 98.0769195556641 2005 96.6507186889648 2006 100 2007 99.5215301513672 2008 99.5192337036133 2009 100 2010 100 2011 98.1220626831055 2012 100 2013 98.591552734375 2014 100 2015 99.523811340332 2016 98.5714263916016 2017 99.0476226806641 2018 98.0952377319336 2019 96.6666641235352 2020 94.7619018554688 2021 93.3333358764648 2022 94.8113174438477