Year | Value | 2022 | 43.127 | 2021 | 43.349 | 2020 | 43.554 | 2019 | 43.74 | 2018 | 43.908 | 2017 | 44.058 | 2016 | 44.19 | 2015 | 44.304 | 2014 | 44.417 | 2013 | 44.531 | 2012 | 44.644 | 2011 | 44.785 | 2010 | 45.007 | 2009 | 45.228 | 2008 | 45.45 | 2007 | 45.672 | 2006 | 45.895 | 2005 | 46.117 | 2004 | 46.339 | 2003 | 46.563 | 2002 | 46.785 | 2001 | 47.008 | 2000 | 47.231 | 1999 | 47.455 | 1998 | 47.678 | 1997 | 47.902 | 1996 | 48.125 | 1995 | 48.349 | 1994 | 48.572 | 1993 | 48.796 | 1992 | 49.019 | 1991 | 49.244 | 1990 | 49.607 | 1989 | 50.018 | 1988 | 50.427 | 1987 | 50.839 | 1986 | 51.249 | 1985 | 51.659 | 1984 | 52.068 | 1983 | 52.479 | 1982 | 52.888 | 1981 | 53.297 | 1980 | 53.854 | 1979 | 54.461 | 1978 | 55.066 | 1977 | 55.67 | 1976 | 56.271 | 1975 | 56.872 | 1974 | 57.47 | 1973 | 58.067 | 1972 | 58.659 | 1971 | 59.251 | 1970 | 60.256 | 1969 | 61.391 | 1968 | 62.512 | 1967 | 63.623 | 1966 | 64.718 | 1965 | 65.798 | 1964 | 66.86 | 1963 | 67.909 | 1962 | 68.938 | 1961 | 69.948 | 1960 | 70.936 |
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