| Year | Value | | 2022 | 131.75083481942 | | 2021 | 123.4486620474 | | 2020 | 120.97891188137 | | 2019 | 119.04925838438 | | 2018 | 117.39274023927 | | 2017 | 115.05926964031 | | 2016 | 112.81795887609 | | 2015 | 111.39716414981 | | 2014 | 109.32418730606 | | 2013 | 107.57516037743 | | 2012 | 105.53038174819 | | 2011 | 103.42912324722 | | 2010 | 100 | | 2009 | 96.500834430802 | | 2008 | 94.361727579542 | | 2007 | 91.32881551813 | | 2006 | 88.726741901859 | | 2005 | 86.671984617848 | | 2004 | 84.668241296194 | | 2003 | 82.78082267073 | | 2002 | 82.382091197663 | | 2001 | 76.442135324008 | | 2000 | 74.13822455395 | | 1999 | 74.101160534439 | | 1998 | 73.813702184645 | | 1997 | 61.183648064891 | | 1996 | 45.940473055666 | | 1995 | 40.75429436957 | | 1994 | 37.807846284174 | | 1993 | 30.847166833731 | | 1992 | 16.673716013881 | | 1991 | 5.1145517610625 |
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