Year | Value | 2021 | 9.83 | 2020 | 9.95 | 2019 | 9.95 | 2018 | 9.95 | 2017 | 10.33 | 2016 | 10.05 | 2015 | 10.05 | 2014 | 10.04 | 2013 | 9.93 | 2012 | 9.29 | 2011 | 9.09 | 2010 | 9.76 | 2009 | 7.5 | 2008 | 6.22 | 2007 | 6.21 | 2006 | 6.48 | 2005 | 7.19 | 2004 | 7.76 | 2003 | 9.08 | 2002 | 9.87 | 2001 | 9.27 | 2000 | 9.23 | 1999 | 9.51 | 1998 | 9.6 | 1997 | 9.61 | 1996 | 9.61 | 1995 | 9.67 | 1994 | 9.96 | 1993 | 9.73 |
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