Year | Value | 2022 | 142.94476857455 | 2021 | 132.02037935751 | 2020 | 129.77976091938 | 2019 | 128.84574333685 | 2018 | 126.20052189975 | 2017 | 123.45836999991 | 2016 | 121.48316677267 | 2015 | 121.50440434597 | 2014 | 120.53771357375 | 2013 | 115.32590417607 | 2012 | 109.59273958161 | 2011 | 104.87799830971 | 2010 | 100 | 2009 | 94.640725606197 | 2008 | 87.758118198531 | 2007 | 77.371420107517 | 2006 | 70.751069502409 | 2005 | 63.470611554982 | 2004 | 55.774659545363 | 2003 | 49.65921863156 | 2002 | 45.372605055196 | 2001 | 41.562366584475 | 2000 | 37.357544892963 | 1999 | 33.667108117763 | 1998 | 30.59386789576 | 1997 | 27.399301229383 | 1996 | 24.194061321042 | 1995 | 20.588683749662 | 1994 | 16.713425631464 | 1993 | 14.721014524322 | 1992 | 13.409730511531 | 1991 | 11.010429282148 | 1990 | 8.5544945239734 | 1989 | 7.1862502504945 | 1988 | 6.1679358385683 | 1987 | 5.1045324248735 | 1986 | 4.3687321931116 | 1985 | 3.9064065590339 | 1984 | 3.3951800510573 | 1983 | 3.0328343774233 | 1982 | 2.286796546226 | 1981 | 1.2028090230281 | 1980 | 0.87760187500545 | 1979 | 0.74287942286078 | 1978 | 0.68036471992542 | 1977 | 0.6418103560942 | 1976 | 0.6159985362411 | 1975 | 0.59524914319375 | 1974 | 0.50715957247358 | 1973 | 0.38990191576837 | 1972 | 0.33841529671849 | 1971 | 0.32352930666572 | 1970 | 0.31385306473097 | 1969 | 0.29990078789419 | 1968 | 0.29221739655497 | 1967 | 0.28072482692078 | 1966 | 0.27737321455642 | 1965 | 0.27686687256344 | 1964 | 0.27872036297888 | 1963 | 0.26975366180953 | 1962 | 0.26207074737371 | 1961 | 0.25523588841012 | 1960 | 0.2491788637645 |
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