| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 0.519092 |
| 2021 | 0.513006 |
| 2020 | 0.504147 |
| 2019 | 0.491078 |
| 2018 | 0.477223 |
| 2017 | 0.467037 |
| 2016 | 0.459072 |
| 2015 | 0.452255 |
| 2014 | 0.445834 |
| 2013 | 0.439967 |
| 2012 | 0.434963 |
| 2011 | 0.431111 |
| 2010 | 0.426771 |
| 2009 | 0.418213 |
| 2008 | 0.409558 |
| 2007 | 0.406571 |
| 2006 | 0.406602 |
| 2005 | 0.411236 |
| 2004 | 0.422111 |
| 2003 | 0.429927 |
| 2002 | 0.428982 |
| 2001 | 0.4246 |
| 2000 | 0.422923 |
| 1999 | 0.424665 |
| 1998 | 0.428398 |
| 1997 | 0.435285 |
| 1996 | 0.440403 |
| 1995 | 0.443397 |
| 1994 | 0.452131 |
| 1993 | 0.464386 |
| 1992 | 0.472193 |
| 1991 | 0.474165 |
| 1990 | 0.474385 |
| 1989 | 0.472333 |
| 1988 | 0.466197 |
| 1987 | 0.45818 |
| 1986 | 0.449089 |
| 1985 | 0.438444 |
| 1984 | 0.426139 |
| 1983 | 0.412588 |
| 1982 | 0.398076 |
| 1981 | 0.382913 |
| 1980 | 0.370074 |
| 1979 | 0.360024 |
| 1978 | 0.35349 |
| 1977 | 0.350549 |
| 1976 | 0.349633 |
| 1975 | 0.3486 |
| 1974 | 0.347224 |
| 1973 | 0.345801 |
| 1972 | 0.344557 |
| 1971 | 0.343127 |
| 1970 | 0.341654 |
| 1969 | 0.340306 |
| 1968 | 0.338705 |
| 1967 | 0.336407 |
| 1966 | 0.333479 |
| 1965 | 0.330404 |
| 1964 | 0.327182 |
| 1963 | 0.323766 |
| 1962 | 0.320191 |
| 1961 | 0.316691 |
| 1960 | 0.313197 |