Year | Value | 2022 | 153.57180058224 | 2021 | 138.63555118874 | 2020 | 133.2668573508 | 2019 | 129.9140349345 | 2018 | 129.38916108685 | 2017 | 125.35759340126 | 2016 | 120.92333818535 | 2015 | 119.75254730713 | 2014 | 118.23144104803 | 2013 | 114.54571289942 | 2012 | 110.62590975255 | 2011 | 106.52249254869 | 2010 | 100 | 2009 | 97.151174880433 | 2008 | 94.76675677549 | 2007 | 86.361783457478 | 2006 | 79.356732393 | 2005 | 72.862162746776 | 2004 | 69.434083949649 | 2003 | 66.310608539615 | 2002 | 63.808637670698 | 2001 | 59.959628987397 | 2000 | 56.89344535456 | 1999 | 54.600608417456 | 1998 | 51.071971232898 | 1997 | 47.815365549351 | 1996 | 44.756968236704 | 1995 | 42.005217620312 | 1994 | 39.616601249485 | 1993 | 36.913268532501 | 1992 | 33.400280942073 | 1991 | 31.918155243508 | 1990 | 29.829769006208 | 1989 | 26.284493221762 | 1988 | 23.328732939055 | 1987 | 21.371271085967 | 1986 | 21.260981523179 | 1985 | 20.919439651321 | 1984 | 19.606085995003 | 1983 | 18.257043380648 | 1982 | 17.290586396632 | 1981 | 15.518986518991 | 1980 | 13.55824811917 | 1979 | 9.5480947084508 | 1978 | 8.3413972953643 | 1977 | 7.6847267050568 | 1976 | 7.0390682429243 | 1975 | 6.2317053723817 | 1974 | 5.4312327343516 | 1973 | 4.2064874107538 | 1972 | 3.7077636205562 | 1971 | 3.5179379564634 | 1970 | 3.5068442488319 | 1969 | 3.4535944521559 | 1968 | 3.3754454449935 | 1967 | 3.1552969800169 | 1966 | 3.0971166466065 | 1965 | 3.0214329078211 | 1964 | 2.9684296379767 | 1963 | 2.9132076266064 |
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