Year | Value | 2021 | 71.094 | 2020 | 72.164 | 2019 | 73.128 | 2018 | 72.464 | 2017 | 72.729 | 2016 | 72.429 | 2015 | 72.366 | 2014 | 69.816 | 2013 | 72.091 | 2012 | 71.279 | 2011 | 71.105 | 2010 | 70.916 | 2009 | 70.481 | 2008 | 70.301 | 2007 | 69.925 | 2006 | 69.694 | 2005 | 70.19 | 2004 | 68.795 | 2003 | 68.788 | 2002 | 68.959 | 2001 | 67.163 | 2000 | 68.321 | 1999 | 69.334 | 1998 | 69.119 | 1997 | 68.884 | 1996 | 68.484 | 1995 | 68.006 | 1994 | 67.808 | 1993 | 67.006 | 1992 | 66.842 | 1991 | 66.632 | 1990 | 66.276 |
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