| Year | Value | | 2022 | 79.12686326 | | 2021 | 75.27144583 | | 2020 | 70.16248359 | | 2019 | 67.94698094 | | 2018 | 64.78201069 | | 2017 | 63.41010138 | | 2016 | 59.82554766 | | 2015 | 56.65625161 | | 2014 | 55.49 | | 2013 | 53.0615 | | 2012 | 51.89998767 | | 2011 | 47.97999305 | | 2010 | 46.23 | | 2009 | 45 | | 2008 | 39.67 | | 2007 | 33.64 | | 2006 | 27.09 | | 2005 | 19.97 | | 2004 | 18.13 | | 2003 | 12.04 | | 2002 | 9.08 | | 2001 | 7.612297749 | | 2000 | 5.370923469 | | 1999 | 2.908154025 | | 1998 | 1.844965121 | | 1997 | 1.219813132 | | 1996 | 0.725251167 | | 1995 | 0.119665549 | | 1994 | 0.019526669 | | 1993 | 0.002339042 |
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