Year | Value | 2022 | 75.263295150385 | 2021 | 75.093487599988 | 2020 | 74.950005159823 | 2019 | 75.025051878914 | 2018 | 74.85975317797 | 2017 | 74.62691777632 | 2016 | 74.374102655077 | 2015 | 73.89623289722 | 2014 | 75.419779896773 | 2013 | 74.367876637748 | 2012 | 75.036068575556 | 2011 | 76.781769320878 | 2010 | 74.832508689511 | 2009 | 74.821514818207 | 2008 | 74.590978710618 | 2007 | 74.244879088331 | 2006 | 74.283240442518 | 2005 | 75.49201997079 | 2004 | 74.602938494011 | 2003 | 76.233606243464 | 2002 | 76.711548313819 | 2001 | 75.415760770947 | 2000 | 74.252370653086 | 1999 | 74.708359143016 | 1998 | 73.351074806525 | 1997 | 74.461726617405 | 1996 | 72.284599217212 | 1995 | 72.643205169922 | 1994 | 72.140695949715 | 1993 | 71.640381735011 | 1992 | 71.385972681229 | 1991 | 71.109843000054 |
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