Year Number 1996 -0.928940415382385 1998 -0.918438374996185 2000 -0.783201575279236 2002 -0.846448183059692 2003 -0.812532126903534 2004 -0.696795463562012 2005 -0.604898989200592 2006 -0.80056357383728 2007 -0.770006239414215 2008 -0.530283987522125 2009 -0.617469727993011 2010 -0.589095711708069 2011 -0.568243741989136 2012 -0.632368385791779 2013 -0.669115602970123 2014 -0.591447770595551 2015 -0.690876185894012 2016 -0.637808084487915 2017 -0.639033019542694 2018 -0.643938779830933 2019 -0.778358161449432 2020 -0.707874298095703 2021 -0.763961493968964 2022 -0.825155377388