Year | Value | 2019 | 14.43 | 2018 | 9.57 | 2017 | 10.14 | 2016 | 8.08 | 2015 | 7.52 | 2014 | 7.85 | 2013 | 9.27 | 2012 | 9.8 | 2011 | 10.33 | 2010 | 10.99 | 2009 | 12.19 | 2008 | 12.5 | 2007 | 14.63 | 2006 | 16.92 | 2005 | 14.23 | 2004 | 17.53 | 2003 | 23.41 | 2002 | 40.91 | 2001 | 25.1 | 2000 | 25.09 | 1999 | 25.08 | 1998 | 19.68 | 1995 | 24.53 |
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