Year | Value | 2022 | 82.191551771061 | 2021 | 81.987427790213 | 2020 | 81.022666494532 | 2019 | 80.144051368623 | 2018 | 80.168555252962 | 2017 | 79.796451468308 | 2016 | 79.402008357155 | 2015 | 79.075325072876 | 2014 | 79.280482619045 | 2013 | 79.080233194374 | 2012 | 79.424244032121 | 2011 | 80.499370230422 | 2010 | 79.65147507517 | 2009 | 80.072136890934 | 2008 | 80.221453129365 | 2007 | 79.702030245843 | 2006 | 80.767529783803 | 2005 | 80.671476884816 | 2004 | 80.23197757802 | 2003 | 77.005730659026 | 2002 | 79.485259824738 | 2001 | 79.857152813122 | 2000 | 79.519903588734 | 1999 | 79.345036184508 | 1998 | 79.441021098713 | 1997 | 79.345429514826 | 1996 | 79.273127993628 | 1995 | 79.164016779051 | 1994 | 79.086946537043 | 1993 | 79.057196760432 | 1992 | 78.973755981252 | 1991 | 78.889081690623 |
|