Year | Value | 2021 | 53.92240217 | 2020 | 53.83614077 | 2019 | 49.13366302 | 2017 | 26.239999 | 2016 | 23.7799999 | 2015 | 21.3199999 | 2014 | 18.86 | 2013 | 16.4 | 2012 | 13.94318219 | 2011 | 11.5 | 2010 | 6 | 2009 | 2.13 | 2008 | 1.82 | 2007 | 1.557123059 | 2006 | 1.279193596 | 2005 | 1.149789671 | 2004 | 0.843930285 | 2003 | 0.520524272 | 2002 | 0.321197997 | 2001 | 0.165260423 | 2000 | 0.132354665 | 1999 | 0.097415945 | 1998 | 0.094423774 | 1997 | 0.041462292 |
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