Year | Value | 2022 | 0.80516754536027 | 2021 | 0.9133386740616 | 2020 | 1.0002344618711 | 2019 | 1.277830313312 | 2018 | 1.2295853223363 | 2017 | 0.90838964015737 | 2016 | 0.93952720952004 | 2015 | 0.79108557974736 | 2014 | 0.69721460085212 | 2013 | 0.7367776683066 | 2012 | 0.50689022702539 | 2011 | 0.56298440687075 | 2010 | 0.77530181672538 | 2009 | 0.8033673557279 | 2008 | 0.81248415752479 | 2007 | 0.81255976056526 | 2006 | 0.80727643876934 | 2005 | 0.81585262441178 | 2004 | 0.80368635785866 | 2003 | 0.79456811767426 | 2002 | 0.76600502104278 | 2001 | 0.50660825701643 | 2000 | 0.34124196813006 | 1999 | 0.4151939035296 | 1998 | 0.46010645528676 | 1997 | 0.4545351292326 | 1996 | 0.23751399290711 | 1995 | 0.065257435874292 | 1994 | 0.12291183151355 | 1993 | 0.19697370439191 | 1992 | 0.32020565642905 | 1991 | 0.67763710986556 | 1990 | 0.98132146290316 | 1989 | 1.0563542071193 | 1988 | 1.0955154468304 | 1987 | 1.0742636660035 | 1986 | 1.0124668047708 | 1985 | 0.97589666241929 | 1984 | 0.96793958142953 | 1983 | 0.97277106367594 | 1982 | 0.85540804562357 | 1981 | 0.41014662125837 | 1980 | 0.10475543692705 | 1979 | 0.14323902620104 | 1978 | 0.18973552490797 | 1977 | 0.29315047499103 | 1976 | 0.52003510437885 | 1975 | 0.7201901868015 | 1974 | 0.81696466805206 | 1973 | 0.90149230650858 | 1972 | 0.96615960712423 | 1971 | 0.95326940697233 | 1970 | 0.92907300859796 | 1969 | 0.98663365161888 | 1968 | 1.0815860698662 | 1967 | 1.1252719937541 | 1966 | 1.1119500751732 | 1965 | 1.0821896288202 | 1964 | 1.0495392925808 | 1963 | 1.0094367558133 | 1962 | 0.95348026715712 | 1961 | 0.94708812803817 |
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