Year | Value | 2022 | 61.14214873116 | 2021 | 61.666861571018 | 2020 | 62.177595145181 | 2019 | 62.685345949959 | 2018 | 63.189980818928 | 2017 | 63.686984248403 | 2016 | 64.176883327836 | 2015 | 64.659615037761 | 2014 | 65.130038659354 | 2013 | 65.561898908471 | 2012 | 65.984947607135 | 2011 | 66.413614187618 | 2010 | 66.864690092069 | 2009 | 67.343251722324 | 2008 | 67.809172743344 | 2007 | 68.278554297266 | 2006 | 68.701554613455 | 2005 | 69.138396514998 | 2004 | 69.563666641231 | 2003 | 69.976505673215 | 2002 | 70.382686331012 | 2001 | 70.790008567539 | 2000 | 71.190519376945 | 1999 | 71.526549980491 | 1998 | 71.85085043594 | 1997 | 72.182941727201 | 1996 | 72.510626209925 | 1995 | 72.82594536637 | 1994 | 73.165662698267 | 1993 | 73.511763769334 | 1992 | 73.850738972294 | 1991 | 74.194972621669 | 1990 | 74.559214343226 | 1989 | 74.989501668108 | 1988 | 75.418476247023 | 1987 | 75.856522888846 | 1986 | 76.294847113619 | 1985 | 76.730521504353 | 1984 | 77.157512385663 | 1983 | 77.560821360329 | 1982 | 77.934536108622 | 1981 | 78.290425992392 | 1980 | 78.765160626445 | 1979 | 79.260117994709 | 1978 | 79.71752654661 | 1977 | 80.198405629681 | 1976 | 80.668362960725 | 1975 | 81.1376276318 | 1974 | 81.27754184756 | 1973 | 81.706281066669 | 1972 | 82.130344842068 | 1971 | 82.5596078706 | 1970 | 82.982442376337 | 1969 | 83.35723066095 | 1968 | 83.729076679175 | 1967 | 84.089230139587 | 1966 | 84.439709006685 | 1965 | 84.767556856675 | 1964 | 85.093285770064 | 1963 | 85.410394195766 | 1962 | 85.716351738497 | 1961 | 86.006465571991 | 1960 | 86.30014739146 |
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