Year | Value | 2022 | -1.2867706657762 | 2021 | 0.75058433086262 | 2020 | 0.21329699270997 | 2019 | 0.13645027658941 | 2018 | 0.19624960767501 | 2017 | 0.24680982762946 | 2016 | 0.25529091308338 | 2015 | 0.23024328270129 | 2014 | 0.20975719260149 | 2013 | 0.21320183000739 | 2012 | 0.2291549838934 | 2011 | 0.23693312734882 | 2010 | 0.36166629969951 | 2009 | 0.19181370299806 | 2008 | 0.35762903541044 | 2007 | 0.37224521565302 | 2006 | 0.25407878588683 | 2005 | 0.27254803261145 | 2004 | 0.27428209591545 | 2003 | 0.31374792560989 | 2002 | 0.65046417732648 | 2001 | 0.72641660380387 | 2000 | 0.56218746891361 | 1999 | 0.16238712525291 | 1998 | 0.167857449305 | 1997 | 0.18625201929385 | 1996 | 0.21667831771221 | 1995 | 0.14301556110885 | 1994 | 0.018474776940465 | 1993 | 0.063145111134404 | 1992 | 0.32408321477644 | 1991 | 0.24711330169399 | 1990 | 0.052807882627008 | 1989 | 0.10380647221157 | 1988 | 0.35387819686812 | 1987 | 0.43001373668523 | 1986 | 0.44438322770472 | 1985 | 0.459592848543 | 1984 | 0.49884283469115 | 1983 | 0.52673814016065 | 1982 | 0.56099263589586 | 1981 | 0.55196990433271 | 1980 | 0.55942212591053 | 1979 | 0.58788810876796 | 1978 | 0.68106884162216 | 1977 | 0.81022148574756 | 1976 | 0.89003686359081 | 1975 | 0.90313494078218 | 1974 | 0.81813279996139 | 1973 | 0.75283018418585 | 1972 | 0.72454572255938 | 1971 | 0.50508123565561 | 1970 | 0.53537779356216 | 1969 | 0.73822875811132 | 1968 | 0.86636816751951 | 1967 | 0.93288422348201 | 1966 | 0.73904096634037 | 1965 | 0.76565160013702 | 1964 | 0.93326816994575 | 1963 | 0.89293891253988 | 1962 | 0.84217384937656 | 1961 | 0.90914437931417 |
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