| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 6.222 |
| 2020 | 6.179 |
| 2019 | 6.012 |
| 2018 | 6.177 |
| 2017 | 6.402 |
| 2016 | 6.65 |
| 2015 | 6.959 |
| 2014 | 7.252 |
| 2013 | 7.615 |
| 2012 | 7.992 |
| 2011 | 8.435 |
| 2010 | 8.88 |
| 2009 | 9.41 |
| 2008 | 9.825 |
| 2007 | 10.154 |
| 2006 | 10.522 |
| 2005 | 10.879 |
| 2004 | 11.275 |
| 2003 | 11.682 |
| 2002 | 12.277 |
| 2001 | 12.731 |
| 2000 | 13.251 |
| 1999 | 13.688 |
| 1998 | 14.2 |
| 1997 | 14.459 |
| 1996 | 14.346 |
| 1995 | 14.355 |
| 1994 | 14.491 |
| 1993 | 14.6 |
| 1992 | 14.609 |
| 1991 | 14.502 |
| 1990 | 14.477 |
| 1989 | 14.436 |
| 1988 | 14.484 |
| 1987 | 14.658 |
| 1986 | 14.796 |
| 1985 | 14.974 |
| 1984 | 15.05 |
| 1983 | 15.118 |
| 1982 | 15.145 |
| 1981 | 15.199 |
| 1980 | 15.388 |
| 1979 | 15.608 |
| 1978 | 16.003 |
| 1977 | 16.325 |
| 1976 | 16.725 |
| 1975 | 17.082 |
| 1974 | 17.365 |
| 1973 | 17.586 |
| 1972 | 17.991 |
| 1971 | 18.258 |
| 1970 | 18.544 |
| 1969 | 18.848 |
| 1968 | 19.241 |
| 1967 | 19.664 |
| 1966 | 19.957 |
| 1965 | 20.225 |
| 1964 | 20.443 |
| 1963 | 20.629 |
| 1962 | 20.775 |
| 1961 | 20.894 |
| 1960 | 20.985 |