| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.726 |
| 2020 | 4.795 |
| 2019 | 4.864 |
| 2018 | 4.923 |
| 2017 | 4.993 |
| 2016 | 5.033 |
| 2015 | 5.088 |
| 2014 | 5.122 |
| 2013 | 5.122 |
| 2012 | 5.098 |
| 2011 | 5.207 |
| 2010 | 5.293 |
| 2009 | 5.357 |
| 2008 | 5.425 |
| 2007 | 5.485 |
| 2006 | 5.563 |
| 2005 | 5.61 |
| 2004 | 5.607 |
| 2003 | 5.605 |
| 2002 | 5.623 |
| 2001 | 5.665 |
| 2000 | 5.686 |
| 1999 | 5.734 |
| 1998 | 5.789 |
| 1997 | 5.838 |
| 1996 | 5.848 |
| 1995 | 5.865 |
| 1994 | 5.927 |
| 1993 | 6.011 |
| 1992 | 6.078 |
| 1991 | 6.135 |
| 1990 | 6.195 |
| 1989 | 6.289 |
| 1988 | 6.371 |
| 1987 | 6.399 |
| 1986 | 6.475 |
| 1985 | 6.569 |
| 1984 | 6.669 |
| 1983 | 6.749 |
| 1982 | 6.796 |
| 1981 | 6.851 |
| 1980 | 6.906 |
| 1979 | 6.954 |
| 1978 | 6.979 |
| 1977 | 6.987 |
| 1976 | 6.989 |
| 1975 | 7.001 |
| 1974 | 6.998 |
| 1973 | 6.962 |
| 1972 | 6.951 |
| 1971 | 6.944 |
| 1970 | 6.909 |
| 1969 | 6.878 |
| 1968 | 6.835 |
| 1967 | 6.798 |
| 1966 | 6.791 |
| 1965 | 6.777 |
| 1964 | 6.775 |
| 1963 | 6.77 |
| 1962 | 6.758 |
| 1961 | 6.754 |
| 1960 | 6.725 |