| Year | Value | | 2022 | 69.230548459191 | | 2021 | 78.591483036881 | | 2020 | 89.778148099901 | | 2019 | 84.169523865998 | | 2018 | 84.75004562667 | | 2017 | 81.757492073539 | | 2016 | 81.992372999746 | | 2015 | 80.093089773878 | | 2014 | 64.462970143467 | | 2013 | 75.016564335881 | | 2012 | 65.081928909897 | | 2011 | 57.524782216882 | | 2010 | 60.55644729802 | | 2009 | 65.204691473484 | | 2008 | 48.497149216341 | | 2007 | 55.769428718477 | | 2006 | 48.308441879095 | | 2005 | 52.236467182321 | | 2004 | 62.101979362771 | | 2003 | 66.442580673387 | | 2002 | 74.030593578167 | | 2001 | 70.174594642964 | | 2000 | 63.702844125583 | | 1999 | 84.494036167757 | | 1998 | 103.93805309735 | | 1997 | 99.948166385901 | | 1996 | 105.19894634687 | | 1995 | 100.05961251863 | | 1994 | 94.505846548134 | | 1993 | 94.030750678324 | | 1992 | 77.505502567865 | | 1991 | 70.023455824863 | | 1990 | 67.183826986366 | | 1989 | 69.522705672569 |
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