Year | Value | 2021 | 8.53 | 2020 | 8.27 | 2019 | 8.89 | 2018 | 9.25 | 2017 | 6.91 | 2016 | 10.26 | 2015 | 10.94 | 2014 | 10.69 | 2013 | 10.96 | 2012 | 10.96 | 2011 | 10.93 | 2010 | 10.56 | 2009 | 10.73 | 2008 | 12.13 | 2007 | 12.11 | 2006 | 13.33 | 2005 | 11.37 | 2004 | 3.76 | 2003 | 5.14 | 2002 | 5.61 | 2001 | 5.33 | 2000 | 6.1 | 1998 | 6.52 | 1997 | 7.63 | 1996 | 7.63 | 1995 | 7.49 |
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