| Year | Value | | 2021 | 36.131954 | | 2020 | 35.88145793 | | 2019 | 28.19552918 | | 2017 | 11.92422906 | | 2016 | 11.00090227 | | 2015 | 10.00046498 | | 2014 | 9 | | 2013 | 8 | | 2012 | 6.9974 | | 2011 | 6 | | 2010 | 5 | | 2009 | 4 | | 2008 | 3 | | 2007 | 2 | | 2006 | 1.646347989 | | 2005 | 0.844307573 | | 2004 | 0.649672673 | | 2003 | 0.555609882 | | 2002 | 0.501919843 | | 2001 | 0.468551964 | | 2000 | 0.481296806 | | 1999 | 0.494541498 | | 1998 | 0.508292797 | | 1997 | 0.391923246 | | 1996 | 0.268683585 | | 1995 | 0.02487191 |
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