| Year | Value | | 2022 | 78.71127536 | | 2021 | 76.44271451 | | 2020 | 72.53157487 | | 2019 | 68.84671356 | | 2018 | 62.7179082 | | 2017 | 59.7055046 | | 2016 | 58.45928961 | | 2015 | 47.56975964 | | 2014 | 44 | | 2013 | 43.3 | | 2012 | 36.94 | | 2011 | 31.52 | | 2010 | 26.9 | | 2009 | 20.07 | | 2008 | 10.01 | | 2007 | 8.26 | | 2006 | 7.526876845 | | 2005 | 6.079457629 | | 2004 | 3.886221354 | | 2003 | 2.558816481 | | 2002 | 1.58787563 | | 2001 | 0.992344436 | | 2000 | 0.484746299 | | 1999 | 0.416343567 | | 1998 | 0.102830957 | | 1997 | 0.060930333 | | 1996 | 0.040065419 | | 1995 | 0.011836885 |
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