| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 4.96315 |
| 2021 | 5.05004 |
| 2020 | 5.09921 |
| 2019 | 5.14263 |
| 2018 | 5.35305 |
| 2017 | 5.57354 |
| 2016 | 5.71622 |
| 2015 | 5.62551 |
| 2014 | 5.43756 |
| 2013 | 5.38043 |
| 2012 | 5.29376 |
| 2011 | 5.25675 |
| 2010 | 5.01849 |
| 2009 | 4.94996 |
| 2008 | 5.20626 |
| 2007 | 5.29879 |
| 2006 | 5.32238 |
| 2005 | 5.30837 |
| 2004 | 5.27259 |
| 2003 | 5.09181 |
| 2002 | 4.23574 |
| 2001 | 4.34425 |
| 2000 | 4.47278 |
| 1999 | 4.28141 |
| 1998 | 4.2589 |
| 1997 | 3.70745 |
| 1996 | 3.5477 |
| 1995 | 4.86657 |
| 1994 | 5.56723 |
| 1993 | 4.85005 |
| 1992 | 4.2261 |
| 1991 | 4.28112 |
| 1990 | 4.34497 |
| 1989 | 4.56571 |
| 1988 | 5.80334 |
| 1987 | 6.03789 |
| 1986 | 6.0767 |
| 1985 | 6.00164 |
| 1984 | 6.01498 |
| 1983 | 6.04786 |
| 1982 | 5.866 |
| 1981 | 5.87946 |
| 1980 | 6.03894 |
| 1979 | 6.83236 |
| 1978 | 10.2267 |
| 1977 | 10.3603 |
| 1976 | 10.4542 |
| 1975 | 10.4867 |
| 1974 | 10.5138 |
| 1973 | 10.5518 |
| 1972 | 10.5733 |
| 1971 | 10.5364 |
| 1970 | 10.5021 |
| 1969 | 10.4899 |
| 1968 | 9.68285 |
| 1967 | 5.7638 |
| 1966 | 5.74016 |
| 1965 | 5.75065 |
| 1964 | 5.74445 |
| 1963 | 5.71236 |
| 1962 | 5.72083 |
| 1961 | 5.68163 |
| 1960 | - |