Year | Value | 2022 | 1.5709725672011 | 2021 | -1.8118714100254 | 2020 | 0.24322268221188 | 2019 | 0.39378886420218 | 2018 | 0.33442726229979 | 2017 | 0.26564266354899 | 2016 | 0.19204841584268 | 2015 | 0.19658874847265 | 2014 | 0.10527758152752 | 2013 | 0.033169946050308 | 2012 | 0.13992565574097 | 2011 | 0.20674766733542 | 2010 | 0.29136167418042 | 2009 | 0.56972945141806 | 2008 | 0.82941260299303 | 2007 | 0.58354220538511 | 2006 | 0.27079562923218 | 2005 | 0.13832598004672 | 2004 | 0.030434848302717 | 2003 | 0.028620590719166 | 2002 | 0.19290161756417 | 2001 | 0.37571970433591 | 2000 | 0.28041410807888 | 1999 | 0.10217593429545 | 1998 | 0.094744751657158 | 1997 | 0.10776274927435 | 1996 | 0.11638129923463 | 1995 | 0.061314062723811 | 1994 | 0.036121765585613 | 1993 | 0.10394704247664 | 1992 | 0.10224116510687 | 1991 | 0.24006484178964 | 1990 | 0.26783077321084 | 1989 | 0.055917203835936 | 1988 | 0.076879258627785 | 1987 | 0.049213263053871 | 1986 | 0.049411624052389 | 1985 | 0.066820435177833 | 1984 | 0.061556879670892 | 1983 | 0.087505593392119 | 1982 | 0.13810055127564 | 1981 | 0.034962754636898 | 1980 | 0.11508733758965 | 1979 | 0.48935449625034 | 1978 | 0.54181343796629 | 1977 | 0.59879976253946 | 1976 | 0.66703711095803 | 1975 | 0.69996518158097 | 1974 | 0.66490038772312 | 1973 | 0.5521416916632 | 1972 | 0.41450321951884 | 1971 | 0.31756370107706 | 1970 | 0.38987323824066 | 1969 | 0.20466376157872 | 1968 | 0.2376878693407 | 1967 | 0.32387035303859 | 1966 | 0.42531853520687 | 1965 | 0.52856607257526 | 1964 | 0.58890323959932 | 1963 | 0.47705897239358 | 1962 | 0.39569449053778 | 1961 | 0.16004250091576 |
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