| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 12.7793 |
| 2021 | 12.9067 |
| 2020 | 13.0264 |
| 2019 | 13.1316 |
| 2018 | 13.2114 |
| 2017 | 13.2218 |
| 2016 | 13.1455 |
| 2015 | 12.9833 |
| 2014 | 12.8086 |
| 2013 | 12.6702 |
| 2012 | 12.5239 |
| 2011 | 12.3911 |
| 2010 | 12.2736 |
| 2009 | 12.2109 |
| 2008 | 12.1885 |
| 2007 | 12.1699 |
| 2006 | 12.1745 |
| 2005 | 12.2191 |
| 2004 | 12.3317 |
| 2003 | 12.4723 |
| 2002 | 12.5695 |
| 2001 | 12.6378 |
| 2000 | 12.704 |
| 1999 | 12.7572 |
| 1998 | 12.8383 |
| 1997 | 12.9304 |
| 1996 | 13.099 |
| 1995 | 13.2824 |
| 1994 | 13.2792 |
| 1993 | 13.1645 |
| 1992 | 13.1316 |
| 1991 | 13.1825 |
| 1990 | 13.2333 |
| 1989 | 13.2745 |
| 1988 | 13.2938 |
| 1987 | 13.2533 |
| 1986 | 13.1677 |
| 1985 | 13.0461 |
| 1984 | 12.8963 |
| 1983 | 12.73 |
| 1982 | 12.5518 |
| 1981 | 12.3989 |
| 1980 | 12.2577 |
| 1979 | 12.1179 |
| 1978 | 12.008 |
| 1977 | 11.966 |
| 1976 | 11.9617 |
| 1975 | 11.9683 |
| 1974 | 11.9851 |
| 1973 | 12.0131 |
| 1972 | 12.0733 |
| 1971 | 12.1441 |
| 1970 | 12.1992 |
| 1969 | 12.2541 |
| 1968 | 12.3066 |
| 1967 | 12.3044 |
| 1966 | 12.2493 |
| 1965 | 12.2002 |
| 1964 | 12.1493 |
| 1963 | 12.1283 |
| 1962 | 12.1884 |
| 1961 | 12.3135 |
| 1960 | 12.4429 |