Year | Value | 2021 | 71.754766031196 | 2020 | 71.90424610052 | 2019 | 72.053726169844 | 2018 | 72.203206239168 | 2017 | 72.352686308492 | 2016 | 72.502166377816 | 2015 | 72.65164644714 | 2014 | 72.801126516465 | 2013 | 72.950606585789 | 2012 | 73.100086655113 | 2011 | 73.249566724437 | 2010 | 73.399046793761 | 2009 | 73.608968804159 | 2008 | 73.818890814558 | 2007 | 74.028812824957 | 2006 | 74.238734835355 | 2005 | 74.448656845754 | 2004 | 74.658578856153 | 2003 | 74.868500866551 | 2002 | 75.07842287695 | 2001 | 75.288344887348 | 2000 | 75.498266897747 | 1999 | 75.679376083189 | 1998 | 75.860485268631 | 1997 | 76.041594454073 | 1996 | 76.222703639515 | 1995 | 76.403812824957 | 1994 | 76.584922010399 | 1993 | 76.766031195841 | 1992 | 76.947140381282 | 1991 | 77.128249566724 | 1990 | 77.309358752166 |
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