Year | Value | 2022 | 138.80846024176 | 2021 | 359.093040779 | 2020 | 163.25778235546 | 2019 | 50.994051500297 | 2018 | 63.292507345589 | 2017 | 32.351626096844 | 2016 | 17.750253831196 | 2015 | 16.909570605098 | 2014 | 36.906642786359 | 2013 | 36.522344913915 | 2012 | 35.559057414702 | 2011 | 18.096617122135 | 2010 | 12.977666389801 | 2009 | 11.256758706301 | 2008 | 14.297122448143 | 2007 | 14.754277078008 | 2006 | 7.1991299011471 | 2005 | 8.5058507593312 | 2004 | 9.6575462860594 | 2003 | 6.4894320867334 | 2002 | 22.224724149591 | 2001 | 1.9352957209533 | 2000 | 7.1212589717229 | 1999 | 17.166445420176 | 1998 | 24.621878546159 | 1997 | 47.16853696472 | 1996 | 132.82377737414 | 1995 | 68.375192948542 | 1994 | 115.39814429274 | 1993 | 101.38042376381 | 1992 | 117.62446889639 | 1991 | 123.57812690294 | 1990 | 65.15809799662 | 1989 | 66.72032193159 | 1988 | 64.700563100105 | 1987 | 20.557237745391 | 1986 | 24.453490125132 | 1985 | 45.40750323421 | 1984 | 34.14634146336 | 1983 | 30.587774779138 | 1982 | 25.712879749259 | 1981 | 24.575724333658 | 1980 | 25.352369011942 | 1979 | 31.138455010753 | 1978 | 19.230404401351 | 1977 | 17.076330791492 | 1976 | 1.6748842635822 | 1975 | 23.963047637074 | 1974 | 26.15810230142 | 1973 | 15.289087947877 | 1972 | 13.554750712862 | 1971 | 1.3036690085935 | 1970 | 4.0277956504717 | 1969 | 12.606868569676 | 1968 | -10.033895358939 | 1967 | 11.013555887773 | 1966 | 1.7124631992702 | 1965 | -2.446029390562 | 1964 | 3.9508384335637 | 1963 | 4.6882325364618 | 1962 | 1.66287136568 | 1961 | 8.7605114619163 | 1960 | 0.092240285829437 |
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