Year | Value | 2022 | 1.0777344370169 | 2021 | 1.018297376694 | 2020 | 1.0178295562979 | 2019 | 0.99223146563367 | 2018 | 0.9624973568623 | 2017 | 0.91322949230933 | 2016 | 0.9295168164866 | 2015 | 0.94728351861338 | 2014 | 0.95780092214681 | 2013 | 0.94053850142894 | 2012 | 0.9567618416599 | 2011 | 0.97482354975083 | 2010 | 0.94903256103587 | 2009 | 0.97296956550553 | 2008 | 0.90785504556634 | 2007 | 0.88498738229018 | 2006 | 0.90298843246504 | 2005 | 0.91691680018388 | 2004 | 0.92660401597353 | 2003 | 0.94004660965436 | 2002 | 0.94035753978188 | 2001 | 0.93167284205006 | 2000 | 0.91598560974252 | 1999 | 0.94524833744442 | 1998 | 0.93859477465295 | 1997 | 0.92043789812644 | 1996 | 0.91124707568501 | 1995 | 0.91687661706355 | 1994 | 0.92287180006608 | 1993 | 0.95066382475523 | 1992 | 0.94831244033171 | 1991 | 0.94082190438454 | 1990 | 0.94179176613269 | 1989 | 0.94078103588688 | 1988 | 0.94970885873148 | 1987 | 0.96551091283847 | 1986 | 0.96281125205544 | 1985 | 0.95939791396488 | 1984 | 0.95840415875897 | 1983 | 0.95229742719026 | 1982 | 0.92637556688205 | 1981 | 0.91664815297164 | 1980 | 0.90679421345006 | 1979 | 0.90739211092906 | 1978 | 0.89128637404356 | 1977 | 0.89068106151211 | 1976 | 0.89165110792265 | 1975 | 0.90738705697547 | 1974 | 0.86206832335151 | 1973 | 0.81501448914647 | 1972 | 0.84247530153343 | 1971 | 0.82411931406309 | 1970 | 0.77323031321878 | 1969 | 0.77255101729261 | 1968 | 0.79386652924309 | 1967 | 0.8362303126502 | 1966 | 0.87942101126539 | 1965 | 0.89971399014179 | 1964 | 0.87504612187006 | 1963 | 0.90291161620184 | 1962 | 0.88298158385249 | 1961 | 0.91666020220826 | 1960 | 1.0805948893483 |
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