Year | Value | 2022 | 40.4 | 2021 | 41.018 | 2020 | 41.641 | 2019 | 42.27 | 2018 | 42.904 | 2017 | 43.543 | 2016 | 44.187 | 2015 | 44.835 | 2014 | 45.486 | 2013 | 46.142 | 2012 | 46.798 | 2011 | 47.457 | 2010 | 48.115 | 2009 | 48.775 | 2008 | 49.434 | 2007 | 50.095 | 2006 | 50.755 | 2005 | 51.415 | 2004 | 52.073 | 2003 | 52.733 | 2002 | 53.39 | 2001 | 54.036 | 2000 | 54.542 | 1999 | 55.048 | 1998 | 55.553 | 1997 | 56.056 | 1996 | 56.558 | 1995 | 57.059 | 1994 | 57.559 | 1993 | 58.057 | 1992 | 58.552 | 1991 | 59.047 | 1990 | 59.54 | 1989 | 60.031 | 1988 | 60.519 | 1987 | 61.093 | 1986 | 61.681 | 1985 | 62.265 | 1984 | 62.845 | 1983 | 63.423 | 1982 | 63.996 | 1981 | 64.565 | 1980 | 65.13 | 1979 | 65.691 | 1978 | 66.248 | 1977 | 66.8 | 1976 | 67.347 | 1975 | 67.89 | 1974 | 68.429 | 1973 | 69.07 | 1972 | 69.754 | 1971 | 70.431 | 1970 | 71.098 | 1969 | 71.756 | 1968 | 72.404 | 1967 | 73.045 | 1966 | 73.675 | 1965 | 74.296 | 1964 | 74.906 | 1963 | 75.509 | 1962 | 76.1 | 1961 | 76.682 | 1960 | 77.253 |
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