Year | Value | 2022 | 36.461845561579 | 2021 | 36.848298379795 | 2020 | 37.100468749653 | 2019 | 37.386274817932 | 2018 | 37.806588131239 | 2017 | 38.265433570436 | 2016 | 38.814661560277 | 2015 | 39.453745370639 | 2014 | 40.140574036051 | 2013 | 40.815972024237 | 2012 | 41.423492479055 | 2011 | 42.01110044751 | 2010 | 42.619059691536 | 2009 | 43.305311216691 | 2008 | 44.150209764961 | 2007 | 45.101725169475 | 2006 | 46.077811395188 | 2005 | 46.918398282534 | 2004 | 47.607739143149 | 2003 | 48.199604113406 | 2002 | 48.778253345551 | 2001 | 49.335357853684 | 2000 | 49.887387350523 | 1999 | 50.434132811379 | 1998 | 50.968589038281 | 1997 | 51.478093471976 | 1996 | 51.968514927213 | 1995 | 52.423544005177 | 1994 | 52.871909290936 | 1993 | 53.300394346705 | 1992 | 53.697654885061 | 1991 | 54.154707171106 | 1990 | 54.895304614848 | 1989 | 55.65863146272 | 1988 | 56.399047469997 | 1987 | 57.159710130501 | 1986 | 57.896574786205 | 1985 | 58.564766470901 | 1984 | 59.186159821751 | 1983 | 59.77141155681 | 1982 | 60.320999972278 | 1981 | 60.93191275711 | 1980 | 61.520660475753 | 1979 | 62.091747650479 | 1978 | 62.616318885176 | 1977 | 63.120486131061 | 1976 | 63.619973499129 | 1975 | 64.167483181777 | 1974 | 64.71604241415 | 1973 | 65.269498611863 | 1972 | 65.788719825929 | 1971 | 66.383648928554 | 1970 | 67.013450527291 | 1969 | 67.605795434434 | 1968 | 68.176845690314 | 1967 | 68.718776996357 | 1966 | 69.249903157369 | 1965 | 69.846915942511 | 1964 | 70.442183543634 | 1963 | 70.984421701852 | 1962 | 71.460400115428 | 1961 | 71.911243985971 | 1960 | 72.326212001234 |
|