| Year | Value | | 2022 | 82.07154778 | | 2021 | 81.25396608 | | 2020 | 78.32090004 | | 2019 | 79.07978368 | | 2018 | 75.29462599 | | 2017 | 67.09619204 | | 2016 | 72.69726967 | | 2015 | 69.84503592 | | 2014 | 68.57 | | 2013 | 66.7476 | | 2012 | 61.93997315 | | 2011 | 57.78997899 | | 2010 | 56.55 | | 2009 | 50.58 | | 2008 | 44.24 | | 2007 | 41.44 | | 2006 | 37.98 | | 2005 | 33.14 | | 2004 | 30.91 | | 2003 | 22.75 | | 2002 | 17.76 | | 2001 | 11.55857318 | | 2000 | 6.644882544 | | 1999 | 4.405359119 | | 1998 | 3.273220279 | | 1997 | 1.729609312 | | 1996 | 0.858982368 | | 1995 | 0.51402859 | | 1994 | 0.268318997 | | 1993 | 0.097213389 |
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