Year | Value | 2022 | 87.782382977848 | 2021 | 88.37275293528 | 2020 | 88.240248298368 | 2019 | 88.342979513576 | 2018 | 88.333846344354 | 2017 | 88.07249841874 | 2016 | 87.665672964589 | 2015 | 87.729339399497 | 2014 | 87.895960682037 | 2013 | 88.227363956527 | 2012 | 88.946361738715 | 2011 | 89.410314840517 | 2010 | 89.124637962558 | 2009 | 88.023483725405 | 2008 | 88.320580367544 | 2007 | 85.431147713378 | 2006 | 83.011099960847 | 2005 | 82.840282749369 | 2004 | 81.158602313498 | 2003 | 79.068902457924 | 2002 | 79.22790382192 | 2001 | 79.828622959818 | 2000 | 80.324563358072 | 1999 | 79.536541471507 | 1998 | 80.436612776927 | 1997 | 81.039327749345 | 1996 | 81.261223085847 | 1995 | 81.43897088088 | 1994 | 81.916791040174 | 1993 | 83.122436082425 | 1992 | 83.801033133141 | 1991 | 84.666471680107 |
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