Year | Value | 2021 | 10.44 | 2020 | 10.6 | 2019 | 10.52 | 2017 | 9.95 | 2016 | 10.17 | 2015 | 9.85 | 2013 | 10.27 | 2012 | 10.65 | 2011 | 10.63 | 2010 | 10.58 | 2009 | 10.7 | 2008 | 11.04 | 2007 | 11.13 | 2006 | 11.11 | 2005 | 11.12 | 2004 | 11.33 | 2003 | 12.13 | 2002 | 11.9 | 2001 | 12.09 | 2000 | 11.82 | 1999 | 11.91 | 1998 | 12.03 | 1997 | 11.96 | 1996 | 12.03 | 1993 | 13.75 |
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