Year | Value | 2019 | 79.793664522583 | 2018 | 79.319782209966 | 2017 | 67.693288462 | 2016 | 52.447719653 | 2015 | 70.101958963925 | 2013 | 77.05199862 | 2012 | 44.265150820689 | 2011 | 43.017394955033 | 2010 | 43.365855596 | 2009 | 116.23 | 2008 | 94.014 | 2007 | 90.58 | 2006 | 88.815 | 2005 | 91.545 | 2004 | 108.483 | 2003 | 109.331 | 2002 | 118.334 | 2001 | 99.33 | 2000 | 108.797 | 1999 | 119.9000000507 | 1998 | 104.2999988347 | 1997 | 73.9999999553 | 1996 | 76.399998054 | 1995 | 85.9999972433 | 1994 | 84.4000011535 | 1993 | 43.3000000567 | 1992 | 55.099998489 | 1991 | 54.8000013083 | 1990 | 52.1999990196 | 1989 | 48.8999988288 | 1988 | 59.6999997348 | 1987 | 52.9000004902 | 1986 | 46.8999995365 | 1985 | 45.8000002429 | 1984 | 41.800000541 | 1983 | 29.7000002042 | 1982 | 22.0999999569 | 1981 | 26.3999994396 | 1980 | 34.8999999165 | 1979 | 40.1000005603 | 1978 | 34.6999999881 | 1977 | 41.5000000149 | 1976 | 38.0999996066 | 1975 | 32.8000000119 | 1974 | 28.999999404 | 1973 | 19.7000005245 | 1972 | 21.4000003337 | 1971 | 17.2000002861 | 1970 | 13.399999857 |
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