Year Number 1996 0.809140563011169 1998 0.876508176326752 2000 0.839712262153625 2002 0.83394581079483 2003 0.833284139633179 2004 0.826330423355103 2005 0.776517033576965 2006 0.984307050704956 2007 0.876864910125732 2008 0.77113288640976 2009 0.805255591869354 2010 0.74797523021698 2011 0.887741565704346 2012 0.898058652877808 2013 0.897257924079895 2014 0.275646388530731 2015 0.918242633342743 2016 0.933672845363617 2017 0.955453455448151 2018 1.00182437896729 2019 0.782942473888397 2020 0.685480654239655 2021 0.714702248573303 2022 0.952804446220398