Year | Value | 2022 | 27.776 | 2021 | 28.44 | 2020 | 29.123 | 2019 | 29.828 | 2018 | 30.554 | 2017 | 31.3 | 2016 | 32.067 | 2015 | 32.845 | 2014 | 33.632 | 2013 | 34.428 | 2012 | 35.232 | 2011 | 36.135 | 2010 | 37.588 | 2009 | 39.063 | 2008 | 40.556 | 2007 | 42.072 | 2006 | 43.6 | 2005 | 44.056 | 2004 | 44.512 | 2003 | 44.971 | 2002 | 45.43 | 2001 | 45.938 | 2000 | 46.781 | 1999 | 47.628 | 1998 | 48.475 | 1997 | 49.323 | 1996 | 50.17 | 1995 | 51.019 | 1994 | 51.867 | 1993 | 52.714 | 1992 | 53.557 | 1991 | 54.708 | 1990 | 58.067 | 1989 | 61.352 | 1988 | 64.533 | 1987 | 67.599 | 1986 | 70.517 | 1985 | 73.276 | 1984 | 75.861 | 1983 | 78.277 | 1982 | 80.511 | 1981 | 82.448 | 1980 | 83.521 | 1979 | 84.543 | 1978 | 85.511 | 1977 | 86.428 | 1976 | 87.295 | 1975 | 88.116 | 1974 | 88.89 | 1973 | 89.619 | 1972 | 90.305 | 1971 | 91.002 | 1970 | 92.166 | 1969 | 93.19 | 1968 | 94.088 | 1967 | 94.876 | 1966 | 95.563 | 1965 | 96.161 | 1964 | 96.682 | 1963 | 96.829 | 1962 | 96.866 | 1961 | 96.903 | 1960 | 96.94 |
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