Year | Value | 2023 | 71.632695547243 | 2022 | 71.73224120223 | 2021 | 71.674164666801 | 2020 | 71.662734589553 | 2019 | 71.976548349169 | 2018 | 72.659266280681 | 2017 | 73.100481612931 | 2016 | 74.395167132718 | 2015 | 75.576253114781 | 2014 | 76.914553092739 | 2013 | 78.368692032792 | 2012 | 79.492866504672 | 2011 | 81.467449979953 | 2010 | 88.175344137605 | 2009 | 88.342809405559 | 2008 | 87.831946746972 | 2007 | 88.09089454378 | 2006 | 87.397459653576 | 2005 | 86.115399369392 | 2004 | 85.804068133791 | 2003 | 86.101053543086 | 2002 | 87.147299133961 | 2001 | 87.195486952763 | 2000 | 88.408464011266 | 1999 | 88.937672680456 | 1998 | 90.405354208482 | 1997 | 91.578940710099 | 1996 | 92.604749924199 | 1995 | 92.304028305376 | 1994 | 92.354143892167 | 1993 | 92.210658784598 | 1992 | 92.40325950214 | 1991 | 92.541117867924 |
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