Year | Value | 2022 | 85.010703160954 | 2021 | 85.083005921196 | 2020 | 84.812880083218 | 2019 | 84.844949785013 | 2018 | 84.689279292482 | 2017 | 84.391744495081 | 2016 | 84.097406420988 | 2015 | 83.710602917216 | 2014 | 83.36493008632 | 2013 | 83.199908035512 | 2012 | 83.025144588432 | 2011 | 82.964122389248 | 2010 | 82.713312512134 | 2009 | 82.919286306446 | 2008 | 82.937571743058 | 2007 | 82.571916946487 | 2006 | 82.262666028927 | 2005 | 81.979204311784 | 2004 | 81.800559479098 | 2003 | 81.498934170645 | 2002 | 81.500448701084 | 2001 | 80.897139321339 | 2000 | 80.693204584157 | 1999 | 80.479746913838 | 1998 | 80.248513022548 | 1997 | 80.03361654612 | 1996 | 80.164244712643 | 1995 | 79.977698646511 | 1994 | 80.169709450646 | 1993 | 80.366974581162 | 1992 | 80.344307984406 | 1991 | 80.624511261776 |
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