| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.212342 |
| 2020 | 0.218825 |
| 2019 | 0.222491 |
| 2018 | 0.226194 |
| 2017 | 0.2303 |
| 2016 | 0.234862 |
| 2015 | 0.239719 |
| 2014 | 0.244302 |
| 2013 | 0.248361 |
| 2012 | 0.252192 |
| 2011 | 0.255728 |
| 2010 | 0.259108 |
| 2009 | 0.261775 |
| 2008 | 0.264182 |
| 2007 | 0.258133 |
| 2006 | 0.251745 |
| 2005 | 0.244785 |
| 2004 | 0.237145 |
| 2003 | 0.228746 |
| 2002 | 0.236566 |
| 2001 | 0.240862 |
| 2000 | 0.249538 |
| 1999 | 0.259703 |
| 1998 | 0.267421 |
| 1997 | 0.280251 |
| 1996 | 0.289011 |
| 1995 | 0.29123 |
| 1994 | 0.300693 |
| 1993 | 0.312621 |
| 1992 | 0.319063 |
| 1991 | 0.334797 |
| 1990 | 0.343433 |
| 1989 | 0.352625 |
| 1988 | 0.362258 |
| 1987 | 0.373453 |
| 1986 | 0.385864 |
| 1985 | 0.398766 |
| 1984 | 0.366013 |
| 1983 | 0.37788 |
| 1982 | 0.390245 |
| 1981 | 0.402193 |
| 1980 | 0.414558 |
| 1979 | 0.427839 |
| 1978 | 0.442478 |
| 1977 | 0.40104 |
| 1976 | 0.415704 |
| 1975 | 0.430933 |
| 1974 | 0.446676 |
| 1973 | 0.462856 |
| 1972 | 0.479593 |
| 1971 | 0.496728 |
| 1970 | 0.514018 |
| 1969 | 0.455658 |
| 1968 | 0.470959 |
| 1967 | 0.485976 |
| 1966 | 0.500754 |
| 1965 | 0.51588 |
| 1964 | 0.531465 |
| 1963 | 0.556561 |
| 1962 | 0.474418 |
| 1961 | 0.503004 |
| 1960 | - |