Year | Value | 2021 | 12.57 | 2020 | 12.53 | 2019 | 12.19 | 2016 | 12.96 | 2015 | 11.97 | 2013 | 12.86 | 2012 | 13.53 | 2011 | 13.8 | 2010 | 13.88 | 2009 | 14.05 | 2008 | 13.75 | 2007 | 14.27 | 2006 | 15.21 | 2005 | 15.37 | 2004 | 18.26 | 2003 | 19.56 | 2002 | 21.01 | 2001 | 20.87 | 2000 | 22.23 | 1999 | 22.31 | 1998 | 27.52 | 1994 | 84.9 | 1989 | 105.36 |
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