| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 20 |
| 2020 | 20.4 |
| 2019 | 20.8 |
| 2018 | 21.3 |
| 2017 | 21.7 |
| 2016 | 22.1 |
| 2015 | 22.6 |
| 2014 | 23.1 |
| 2013 | 23.6 |
| 2012 | 24.1 |
| 2011 | 24.6 |
| 2010 | 25.2 |
| 2009 | 25.7 |
| 2008 | 26.3 |
| 2007 | 26.9 |
| 2006 | 27.6 |
| 2005 | 28.4 |
| 2004 | 29.3 |
| 2003 | 30.4 |
| 2002 | 31.5 |
| 2001 | 32.6 |
| 2000 | 33.7 |
| 1999 | 34.7 |
| 1998 | 35.5 |
| 1997 | 36.2 |
| 1996 | 36.7 |
| 1995 | 37.2 |
| 1994 | 37.6 |
| 1993 | 38.1 |
| 1992 | 38.5 |
| 1991 | 39.1 |
| 1990 | 39.7 |
| 1989 | 40.3 |
| 1988 | 40.9 |
| 1987 | 41.5 |
| 1986 | 42 |
| 1985 | 42.5 |
| 1984 | 42.9 |
| 1983 | 43.1 |
| 1982 | 43 |
| 1981 | 43 |
| 1980 | 43 |
| 1979 | 43.1 |
| 1978 | 43.2 |
| 1977 | 43.4 |
| 1976 | 43.6 |
| 1975 | 43.8 |
| 1974 | 44.1 |
| 1973 | 44.5 |
| 1972 | 45 |
| 1971 | 45.6 |
| 1970 | 46.2 |
| 1969 | 46.8 |
| 1968 | 47.3 |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |