Year | Value | 2022 | 183.68274446562 | 2021 | 171.60240433954 | 2020 | 164.03753115379 | 2019 | 158.93563993549 | 2018 | 152.64623955432 | 2017 | 146.04896642721 | 2016 | 138.85060841519 | 2015 | 130.2888139569 | 2014 | 124.62981967453 | 2013 | 117.43146166251 | 2012 | 111.0101158188 | 2011 | 104.99926696965 | 2010 | 100 | 2009 | 96.070957337634 | 2008 | 89.605629673069 | 2007 | 81.404474417241 | 2006 | 76.668069198065 | 2005 | 74.259170209647 | 2004 | 72.758278844744 | 2003 | 73.265296877291 | 2002 | 69.327877144114 | 2001 | 63.316188242193 | 2000 | 59.900709573376 | 1999 | 56.864729511802 | 1998 | 54.063436446269 | 1997 | 50.583046474124 | 1996 | 46.578341885354 | 1995 | 43.387570737429 | 1994 | 39.922150711039 | 1993 | 36.646494648879 | 1992 | 33.400784342472 | 1991 | 29.331177246738 | 1990 | 25.431332649172 | 1989 | 22.245556370034 | 1988 | 19.389330010262 | 1987 | 17.192239994136 | 1986 | 14.800408004691 | 1985 | 12.473488784636 | 1984 | 10.725802228412 | 1983 | 9.6172694619557 | 1982 | 8.5636641254948 | 1981 | 7.4701120070371 | 1980 | 6.4814203196012 | 1979 | 5.7024516933001 | 1978 | 5.0333370473538 | 1977 | 4.5290048380003 | 1976 | 4.0746062160973 | 1975 | 3.6701422078874 | 1974 | 3.2357167570737 | 1973 | 2.8961665444949 | 1972 | 2.6464964081513 | 1971 | 2.4867078141035 | 1970 | 2.3468940038118 | 1969 | 2.235310071837 | 1968 | 2.165196158921 | 1967 | 2.1230299076382 | 1966 | 2.050464154816 | 1965 | 1.9813308898988 | 1964 | 1.9038621902947 | 1963 | 1.8567929922299 | 1962 | 1.8322776718956 | 1961 | 1.8097233543469 | 1960 | 1.7724596246885 |
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