Year | Value | 2022 | 84.660608578774 | 2021 | 84.144034047636 | 2020 | 83.929320503503 | 2019 | 84.317129818892 | 2018 | 84.025729906487 | 2017 | 83.538185299267 | 2016 | 83.055239652864 | 2015 | 82.715720059292 | 2014 | 82.402388669803 | 2013 | 82.13316230587 | 2012 | 82.691993299689 | 2011 | 83.603339303139 | 2010 | 83.313515820264 | 2009 | 83.163732966653 | 2008 | 82.421022074202 | 2007 | 82.486868911719 | 2006 | 82.278209884933 | 2005 | 81.977090660047 | 2004 | 81.937512857137 | 2003 | 81.882106196894 | 2002 | 81.142388817132 | 2001 | 80.061777379927 | 2000 | 79.89848612439 | 1999 | 78.57718411392 | 1998 | 77.291878960616 | 1997 | 76.343034838128 | 1996 | 75.251786031148 | 1995 | 74.864696335866 | 1994 | 74.060332342725 | 1993 | 74.121883194441 | 1992 | 74.471893985102 | 1991 | 74.581793868423 |
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