Year | Value | 2021 | 11.080332409972 | 2020 | 11.080332409972 | 2019 | 11.080332409972 | 2018 | 11.080332409972 | 2017 | 11.080332409972 | 2016 | 11.080332409972 | 2015 | 11.080332409972 | 2014 | 11.080332409972 | 2013 | 11.080332409972 | 2012 | 11.080332409972 | 2011 | 11.080332409972 | 2010 | 11.080332409972 | 2009 | 11.080332409972 | 2008 | 11.080332409972 | 2007 | 11.542012927055 | 2006 | 11.819021237304 | 2005 | 11.819021237304 | 2004 | 12.280701754386 | 2003 | 12.465373961219 | 2002 | 12.465373961219 | 2001 | 12.927054478301 | 2000 | 12.927054478301 | 1999 | 13.20406278855 | 1998 | 13.388734995383 | 1997 | 13.850415512465 | 1996 | 14.312096029548 | 1995 | 14.589104339797 | 1994 | 14.866112650046 | 1993 | 16.06648199446 | 1992 | 12.557710064635 | 1991 | 11.634349030471 | 1990 | 10.987996306556 | 1989 | 11.080332409972 | 1988 | 10.61865189289 | 1987 | 10.61865189289 | 1986 | 10.61865189289 | 1985 | 10.61865189289 | 1984 | 10.61865189289 | 1983 | 10.61865189289 | 1982 | 11.542012927055 | 1981 | 12.465373961219 | 1980 | 12.465373961219 | 1979 | 12.465373961219 | 1978 | 13.388734995383 | 1977 | 13.388734995383 | 1976 | 13.388734995383 | 1975 | 13.388734995383 | 1974 | 13.388734995383 | 1973 | 13.388734995383 | 1972 | 13.388734995383 | 1971 | 13.388734995383 | 1970 | 13.388734995383 | 1969 | 14.312096029548 | 1968 | 14.312096029548 | 1967 | 14.312096029548 | 1966 | 13.850415512465 | 1965 | 13.850415512465 | 1964 | 15.327793167128 | 1963 | 15.327793167128 | 1962 | 15.327793167128 | 1961 | 15.327793167128 |
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