Year | Value | 2022 | 42.01 | 2021 | 42.179 | 2020 | 42.329 | 2019 | 42.46 | 2018 | 42.572 | 2017 | 42.664 | 2016 | 42.736 | 2015 | 42.809 | 2014 | 42.882 | 2013 | 42.954 | 2012 | 43.027 | 2011 | 43.1 | 2010 | 43.173 | 2009 | 43.245 | 2008 | 43.318 | 2007 | 43.391 | 2006 | 43.464 | 2005 | 43.537 | 2004 | 43.61 | 2003 | 43.683 | 2002 | 43.756 | 2001 | 43.829 | 2000 | 43.902 | 1999 | 43.975 | 1998 | 44.014 | 1997 | 44.036 | 1996 | 44.057 | 1995 | 44.079 | 1994 | 44.1 | 1993 | 44.008 | 1992 | 43.917 | 1991 | 43.825 | 1990 | 43.734 | 1989 | 43.643 | 1988 | 43.659 | 1987 | 43.769 | 1986 | 43.879 | 1985 | 43.99 | 1984 | 44.1 | 1983 | 44.539 | 1982 | 44.978 | 1981 | 45.418 | 1980 | 45.858 | 1979 | 46.3 | 1978 | 46.644 | 1977 | 46.908 | 1976 | 47.172 | 1975 | 47.436 | 1974 | 47.7 | 1973 | 48.215 | 1972 | 48.731 | 1971 | 49.247 | 1970 | 49.764 | 1969 | 50.353 | 1968 | 51.003 | 1967 | 51.654 | 1966 | 52.304 | 1965 | 52.953 | 1964 | 53.6 | 1963 | 54.153 | 1962 | 54.704 | 1961 | 55.254 | 1960 | 55.802 |
|