Year | Value | 2022 | 132.06799841364 | 2021 | 124.30201014915 | 2020 | 121.54077674514 | 2019 | 118.64858829001 | 2018 | 115.8080460573 | 2017 | 114.58331301979 | 2016 | 113.85418043079 | 2015 | 112.86750356874 | 2014 | 109.92563490797 | 2013 | 107.92375872233 | 2012 | 105.75540574296 | 2011 | 102.93969946305 | 2010 | 100 | 2009 | 98.740680650519 | 2008 | 95.824158844208 | 2007 | 90.968439757407 | 2006 | 90.137907057596 | 2005 | 85.749604048364 | 2004 | 84.05708150817 | 2003 | 83.86114214665 | 2002 | 83.341786505086 | 2001 | 81.044638941793 | 2000 | 77.614265031808 | 1999 | 76.67333740304 | 1998 | 75.26457645148 | 1997 | 72.951466475775 | 1996 | 69.619319576936 | 1995 | 66.990567035067 | 1994 | 61.419966072449 | 1993 | 45.464458892837 | 1992 | 46.97059670773 | 1991 | 46.978139069507 | 1990 | 46.949945002864 | 1989 | 46.439398942563 | 1988 | 47.225959527901 | 1987 | 46.44460676379 | 1986 | 41.050381452743 | 1985 | 38.090722775356 | 1984 | 35.103947511579 | 1983 | 31.519170706894 | 1982 | 27.024641407844 | 1981 | 23.861338962472 | 1980 | 21.549605077755 | 1979 | 19.670707438769 | 1978 | 18.456178180635 | 1977 | 16.410881437001 | 1976 | 14.307866922756 | 1975 | 13.015357272416 | 1974 | 11.461889616623 | 1973 | 9.7770219299111 | 1972 | 8.8572217131632 | 1971 | 8.1940813700201 | 1970 | 7.87786166934 | 1969 | 7.4419082955929 | 1968 | 7.5248008384897 |
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