| Year | Value | | 2022 | 92.29685266 | | 2021 | 90.9239507 | | 2020 | 85.94259898 | | 2019 | 81.87762047 | | 2018 | 78.90391906 | | 2017 | 76.42674823 | | 2016 | 74.58772647 | | 2015 | 70.8299336 | | 2014 | 66 | | 2013 | 63.30422443 | | 2012 | 61.90662747 | | 2011 | 50.6 | | 2010 | 31.6 | | 2009 | 18.2 | | 2008 | 11 | | 2007 | 4.02 | | 2006 | 3.268369051 | | 2005 | 2.961707492 | | 2004 | 2.650394657 | | 2003 | 2.000414753 | | 2002 | 1.674770995 | | 2001 | 1.006124211 | | 2000 | 0.668594403 | | 1999 | 0.464277218 | | 1998 | 0.131069604 | | 1997 | 0.064596754 | | 1996 | 0.031824512 | | 1995 | 0.011302355 | | 1994 | 0.000521079 |
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