Year | Value | 2022 | 67.367767128151 | 2021 | 67.285909609764 | 2020 | 66.483245835764 | 2019 | 64.762036786158 | 2018 | 65.228534542517 | 2017 | 65.785519827409 | 2016 | 66.470899470899 | 2015 | 67.52521837526 | 2014 | 69.251468063311 | 2013 | 67.640005749257 | 2012 | 68.005434654562 | 2011 | 68.814414061544 | 2010 | 68.97013798777 | 2009 | 69.37897724268 | 2008 | 69.893536191287 | 2007 | 69.930885487864 | 2006 | 69.753495660559 | 2005 | 69.366620237956 | 2004 | 68.982400423448 | 2003 | 68.551212475098 | 2002 | 68.681527602842 | 2001 | 68.342502848881 | 2000 | 67.92578298172 | 1999 | 66.901644378682 | 1998 | 66.481878249404 | 1997 | 66.092288824161 | 1996 | 65.839134307677 | 1995 | 68.365085636735 | 1994 | 68.486939203727 | 1993 | 68.891248020728 | 1992 | 68.921666481831 | 1991 | 68.948170731707 |
|