| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 1.71295 |
| 2021 | 1.73683 |
| 2020 | 1.75798 |
| 2019 | 1.77007 |
| 2018 | 1.77349 |
| 2017 | 1.77818 |
| 2016 | 1.78551 |
| 2015 | 1.79419 |
| 2014 | 1.79145 |
| 2013 | 1.78211 |
| 2012 | 1.78304 |
| 2011 | 1.7853 |
| 2010 | 1.78382 |
| 2009 | 1.77131 |
| 2008 | 1.74435 |
| 2007 | 1.70651 |
| 2006 | 1.66419 |
| 2005 | 1.62542 |
| 2004 | 1.59251 |
| 2003 | 1.56678 |
| 2002 | 1.54575 |
| 2001 | 1.52773 |
| 2000 | 1.52565 |
| 1999 | 1.54064 |
| 1998 | 1.54983 |
| 1997 | 1.56156 |
| 1996 | 1.53461 |
| 1995 | 1.49326 |
| 1994 | 1.5418 |
| 1993 | 1.64117 |
| 1992 | 1.69116 |
| 1991 | 1.69187 |
| 1990 | 1.68971 |
| 1989 | 1.68495 |
| 1988 | 1.68185 |
| 1987 | 1.69285 |
| 1986 | 1.7105 |
| 1985 | 1.72808 |
| 1984 | 1.74219 |
| 1983 | 1.75556 |
| 1982 | 1.77063 |
| 1981 | 1.77886 |
| 1980 | 1.78829 |
| 1979 | 1.80405 |
| 1978 | 1.82023 |
| 1977 | 1.82543 |
| 1976 | 1.82273 |
| 1975 | 1.81741 |
| 1974 | 1.81042 |
| 1973 | 1.80118 |
| 1972 | 1.78626 |
| 1971 | 1.76895 |
| 1970 | 1.75283 |
| 1969 | 1.73462 |
| 1968 | 1.71452 |
| 1967 | 1.70364 |
| 1966 | 1.70359 |
| 1965 | 1.70413 |
| 1964 | 1.70323 |
| 1963 | 1.70244 |
| 1962 | 1.70366 |
| 1961 | 1.70268 |
| 1960 | 1.70102 |