| Year | Value | | 2022 | 97.3986404 | | 2021 | 96.7514278 | | 2020 | 89.55501192 | | 2019 | 84.18714501 | | 2018 | 81.20104862 | | 2017 | 80.14047901 | | 2016 | 78.78830993 | | 2015 | 71.06406781 | | 2014 | 63.66542588 | | 2013 | 57.05751226 | | 2012 | 65.8 | | 2011 | 61 | | 2010 | 56.3 | | 2009 | 55.9 | | 2008 | 55.8 | | 2007 | 55.7 | | 2006 | 51.63798899 | | 2005 | 48.62917025 | | 2004 | 42.25226563 | | 2003 | 34.97115234 | | 2002 | 32.33820434 | | 2001 | 26.6959725 | | 2000 | 21.38473116 | | 1999 | 12.3055022 | | 1998 | 6.751770483 | | 1997 | 2.307393234 | | 1996 | 0.852044466 | | 1995 | 0.145673837 | | 1994 | 0.099607417 | | 1993 | 0.025538478 | | 1992 | 0.001047822 |
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