| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 1.09219 |
| 2021 | 1.07944 |
| 2020 | 1.05438 |
| 2019 | 1.02237 |
| 2018 | 1.05786 |
| 2017 | 1.0558 |
| 2016 | 1.09369 |
| 2015 | 1.09137 |
| 2014 | 1.01576 |
| 2013 | 0.972363 |
| 2012 | 0.913799 |
| 2011 | 0.903151 |
| 2010 | 0.896024 |
| 2009 | 0.757193 |
| 2008 | 0.698279 |
| 2007 | 0.762065 |
| 2006 | 0.792124 |
| 2005 | 0.823941 |
| 2004 | 0.994615 |
| 2003 | 1.07431 |
| 2002 | 1.3026 |
| 2001 | 1.4516 |
| 2000 | 1.48726 |
| 1999 | 1.48766 |
| 1998 | 1.60197 |
| 1997 | 1.54354 |
| 1996 | 1.55535 |
| 1995 | 1.62721 |
| 1994 | 1.29411 |
| 1993 | 1.37928 |
| 1992 | 2.10604 |
| 1991 | 2.18178 |
| 1990 | 2.04648 |
| 1989 | 2.38264 |
| 1988 | 2.44754 |
| 1987 | 3.15188 |
| 1986 | 5.74462 |
| 1985 | 5.38708 |
| 1984 | 5.24756 |
| 1983 | 5.41432 |
| 1982 | 5.4976 |
| 1981 | 5.58429 |
| 1980 | 4.52063 |
| 1979 | 8.5026 |
| 1978 | 10.1091 |
| 1977 | 5.47665 |
| 1976 | 4.68897 |
| 1975 | 5.36005 |
| 1974 | 5.35513 |
| 1973 | 4.17462 |
| 1972 | 3.43269 |
| 1971 | 3.09762 |
| 1970 | 2.29998 |
| 1969 | 1.73498 |
| 1968 | 1.4732 |
| 1967 | 1.42312 |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |