| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 8.92416 |
| 2021 | 8.85239 |
| 2020 | 8.78535 |
| 2019 | 8.7126 |
| 2018 | 8.65674 |
| 2017 | 8.67384 |
| 2016 | 8.75321 |
| 2015 | 8.87818 |
| 2014 | 9.03287 |
| 2013 | 9.1756 |
| 2012 | 9.28377 |
| 2011 | 9.35736 |
| 2010 | 9.42281 |
| 2009 | 9.44647 |
| 2008 | 9.45364 |
| 2007 | 9.49444 |
| 2006 | 9.53562 |
| 2005 | 9.5554 |
| 2004 | 9.55476 |
| 2003 | 9.53511 |
| 2002 | 9.51269 |
| 2001 | 9.4881 |
| 2000 | 9.46046 |
| 1999 | 9.42402 |
| 1998 | 9.3492 |
| 1997 | 9.25286 |
| 1996 | 9.11911 |
| 1995 | 8.97958 |
| 1994 | 8.91593 |
| 1993 | 8.87415 |
| 1992 | 8.76851 |
| 1991 | 8.62147 |
| 1990 | 8.49006 |
| 1989 | 8.38561 |
| 1988 | 8.27352 |
| 1987 | 8.26488 |
| 1986 | 8.35293 |
| 1985 | 8.4597 |
| 1984 | 8.55125 |
| 1983 | 8.64724 |
| 1982 | 8.76241 |
| 1981 | 8.8152 |
| 1980 | 8.87529 |
| 1979 | 8.97258 |
| 1978 | 9.0756 |
| 1977 | 9.11419 |
| 1976 | 9.1014 |
| 1975 | 9.06357 |
| 1974 | 8.99573 |
| 1973 | 8.94573 |
| 1972 | 8.9539 |
| 1971 | 8.99776 |
| 1970 | 9.05702 |
| 1969 | 9.12574 |
| 1968 | 9.14707 |
| 1967 | 9.10069 |
| 1966 | 9.04372 |
| 1965 | 8.98617 |
| 1964 | 8.93348 |
| 1963 | 8.90164 |
| 1962 | 8.89533 |
| 1961 | 8.88896 |
| 1960 | 8.88474 |