| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 0.950541 |
| 2021 | 0.957596 |
| 2020 | 0.962671 |
| 2019 | 0.962538 |
| 2018 | 0.951498 |
| 2017 | 0.927845 |
| 2016 | 0.899115 |
| 2015 | 0.87179 |
| 2014 | 0.84647 |
| 2013 | 0.82576 |
| 2012 | 0.811325 |
| 2011 | 0.800782 |
| 2010 | 0.793173 |
| 2009 | 0.787987 |
| 2008 | 0.786429 |
| 2007 | 0.788607 |
| 2006 | 0.793996 |
| 2005 | 0.79881 |
| 2004 | 0.799047 |
| 2003 | 0.799511 |
| 2002 | 0.806118 |
| 2001 | 0.815736 |
| 2000 | 0.830993 |
| 1999 | 0.853823 |
| 1998 | 0.87063 |
| 1997 | 0.875615 |
| 1996 | 0.871523 |
| 1995 | 0.867784 |
| 1994 | 0.875374 |
| 1993 | 0.890546 |
| 1992 | 0.903229 |
| 1991 | 0.911488 |
| 1990 | 0.918274 |
| 1989 | 0.923417 |
| 1988 | 0.928453 |
| 1987 | 0.93432 |
| 1986 | 0.938302 |
| 1985 | 0.939716 |
| 1984 | 0.937515 |
| 1983 | 0.930714 |
| 1982 | 0.91942 |
| 1981 | 0.904069 |
| 1980 | 0.886998 |
| 1979 | 0.869624 |
| 1978 | 0.852363 |
| 1977 | 0.835467 |
| 1976 | 0.820451 |
| 1975 | 0.808487 |
| 1974 | 0.798839 |
| 1973 | 0.791443 |
| 1972 | 0.787677 |
| 1971 | 0.785965 |
| 1970 | 0.783394 |
| 1969 | 0.780499 |
| 1968 | 0.778041 |
| 1967 | 0.775588 |
| 1966 | 0.772762 |
| 1965 | 0.770465 |
| 1964 | 0.768849 |
| 1963 | 0.767239 |
| 1962 | 0.765333 |
| 1961 | 0.763338 |
| 1960 | 0.760845 |