| Year | Value | | 2021 | 78.61225758 | | 2020 | 76.50770055 | | 2019 | 66.54394969 | | 2018 | 68.24505226 | | 2017 | 64.74488433 | | 2016 | 64.34602977 | | 2015 | 59.10083377 | | 2014 | 54.62280586 | | 2013 | 41.9 | | 2012 | 37.5 | | 2011 | 32 | | 2010 | 25 | | 2009 | 15.3 | | 2008 | 6.21 | | 2007 | 6.021253397 | | 2006 | 5.631787777 | | 2005 | 5.252983352 | | 2004 | 4.899008571 | | 2003 | 4.575217225 | | 2002 | 1.960405046 | | 2001 | 1.631094667 | | 2000 | 1.300470022 | | 1999 | 0.970737757 | | 1998 | 0.128659478 | | 1997 | 0.111650935 | | 1996 | 0.094572902 | | 1995 | 0.052743123 | | 1994 | 0.009117014 |
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