| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 9.12621 |
| 2021 | 9.00208 |
| 2020 | 8.85715 |
| 2019 | 8.68871 |
| 2018 | 8.51309 |
| 2017 | 8.34844 |
| 2016 | 8.19569 |
| 2015 | 8.07688 |
| 2014 | 8.04881 |
| 2013 | 8.0852 |
| 2012 | 8.12618 |
| 2011 | 8.19361 |
| 2010 | 8.30863 |
| 2009 | 8.47354 |
| 2008 | 8.64712 |
| 2007 | 8.79949 |
| 2006 | 8.94267 |
| 2005 | 9.0733 |
| 2004 | 9.19003 |
| 2003 | 9.28949 |
| 2002 | 9.36291 |
| 2001 | 9.41537 |
| 2000 | 9.4522 |
| 1999 | 9.46673 |
| 1998 | 9.46305 |
| 1997 | 9.43275 |
| 1996 | 9.40983 |
| 1995 | 9.36159 |
| 1994 | 9.21368 |
| 1993 | 9.02296 |
| 1992 | 8.87431 |
| 1991 | 8.75384 |
| 1990 | 8.618 |
| 1989 | 8.47241 |
| 1988 | 8.30988 |
| 1987 | 8.14633 |
| 1986 | 8.00737 |
| 1985 | 7.90405 |
| 1984 | 7.84146 |
| 1983 | 7.82063 |
| 1982 | 7.84214 |
| 1981 | 7.89067 |
| 1980 | 7.95743 |
| 1979 | 8.04352 |
| 1978 | 8.13696 |
| 1977 | 8.21721 |
| 1976 | 8.28374 |
| 1975 | 8.34493 |
| 1974 | 8.38772 |
| 1973 | 8.43468 |
| 1972 | 8.51884 |
| 1971 | 8.62352 |
| 1970 | 8.724 |
| 1969 | 8.8203 |
| 1968 | 8.8768 |
| 1967 | 8.86439 |
| 1966 | 8.82417 |
| 1965 | 8.78532 |
| 1964 | 8.75773 |
| 1963 | 8.75264 |
| 1962 | 8.77049 |
| 1961 | 8.7923 |
| 1960 | 8.81295 |