Year | Value | 2022 | 130.78748216983 | 2021 | 114.43451986723 | 2020 | 110.40098363882 | 2019 | 108.35902293441 | 2018 | 111.97976470929 | 2017 | 109.8315226999 | 2016 | 108.22652445521 | 2015 | 107.75129657649 | 2014 | 106.97589359933 | 2013 | 107.25270157939 | 2012 | 106.68329177057 | 2011 | 102.75976724855 | 2010 | 100 | 2009 | 100.77011619937 | 2008 | 98.208660825986 | 2007 | 88.748274160922 | 2006 | 88.95342504895 | 2005 | 86.925361984445 | 2004 | 81.685222158815 | 2003 | 82.01346357966 | 2002 | 80.378117929379 | 2001 | 78.666573377831 | 2000 | 74.91524285389 | 1999 | 75.143839557692 | 1998 | 75.958581655861 | 1997 | 72.283450033188 | 1996 | 70.645401728597 | 1995 | 66.585168405658 | 1994 | 61.963413452949 | 1993 | 49.500291362649 | 1992 | 49.22783708075 | 1991 | 50.227943652112 | 1990 | 49.164707430065 | 1989 | 49.413903419608 | 1988 | 49.653131569568 | 1987 | 47.626337521292 | 1986 | 48.938769732847 | 1985 | 50.251201944237 | 1984 | 47.005008853835 | 1983 | 44.832019824994 | 1982 | 41.452112876175 | 1981 | 36.991075966636 | 1980 | 34.39248132748 | 1979 | 30.652115138535 | 1978 | 26.655527672996 | 1977 | 24.619690943546 | 1976 | 18.940248325913 | 1975 | 20.677289246465 | 1974 | 17.411435572766 | 1973 | 16.014990911173 | 1972 | 14.883282432647 | 1971 | 15.331476146106 | 1970 | 15.021843183445 | 1969 | 14.760203329989 | 1968 | 13.460518969227 | 1967 | 13.499223089568 | 1966 | 14.110748190815 | 1965 | 13.784859497607 | 1964 | 13.886264292909 | 1963 | 13.634687510709 | 1962 | 12.914790872514 | 1961 | 12.701918210739 | 1960 | 10.713300508071 |
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