Year | Value | 2022 | 65.778868775064 | 2021 | 67.915314933901 | 2020 | 76.281824024189 | 2019 | 70.370203105573 | 2018 | 70.64838117445 | 2017 | 70.193289033752 | 2016 | 76.681439175894 | 2015 | 76.771714486726 | 2014 | 69.649016939803 | 2013 | 69.255806061591 | 2012 | 66.545643007508 | 2011 | 63.7413937463 | 2010 | 67.9051122009 | 2009 | 72.549458634247 | 2008 | 70.875355422005 | 2007 | 61.678237753042 | 2006 | 58.986120232833 | 2005 | 67.31413194663 | 2004 | 79.313560186442 | 2003 | 84.366631904247 | 2002 | 93.243795923498 | 2001 | 92.368720362045 | 2000 | 90.414760726849 | 1999 | 73.115955864273 | 1998 | 74.122218087932 | 1997 | 66.215043889062 | 1996 | 71.087130074266 | 1995 | 64.669795995643 | 1994 | 65.744249218403 | 1993 | 63.920221029997 | 1992 | 64.13295882973 | 1991 | 76.060120702329 | 1990 | 75.201920648056 | 1989 | 77.153629158649 | 1988 | 90.976203209677 | 1987 | 91.127033125786 | 1986 | 86.338219487963 | 1985 | 78.684774388685 | 1984 | 78.090851744666 | 1983 | 77.808272966064 | 1982 | 67.969983254205 | 1981 | 77.207435242352 |
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