| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 0.829995 |
| 2021 | 0.856655 |
| 2020 | 0.880015 |
| 2019 | 0.894441 |
| 2018 | 0.896381 |
| 2017 | 0.88756 |
| 2016 | 0.872493 |
| 2015 | 0.855438 |
| 2014 | 0.835618 |
| 2013 | 0.81606 |
| 2012 | 0.799739 |
| 2011 | 0.784138 |
| 2010 | 0.769174 |
| 2009 | 0.753928 |
| 2008 | 0.741415 |
| 2007 | 0.733453 |
| 2006 | 0.729038 |
| 2005 | 0.723718 |
| 2004 | 0.712902 |
| 2003 | 0.702645 |
| 2002 | 0.700632 |
| 2001 | 0.70315 |
| 2000 | 0.713546 |
| 1999 | 0.73473 |
| 1998 | 0.749215 |
| 1997 | 0.749053 |
| 1996 | 0.738263 |
| 1995 | 0.729641 |
| 1994 | 0.737472 |
| 1993 | 0.75652 |
| 1992 | 0.77439 |
| 1991 | 0.788158 |
| 1990 | 0.799966 |
| 1989 | 0.809631 |
| 1988 | 0.818126 |
| 1987 | 0.829993 |
| 1986 | 0.841554 |
| 1985 | 0.849852 |
| 1984 | 0.85219 |
| 1983 | 0.846934 |
| 1982 | 0.83423 |
| 1981 | 0.813357 |
| 1980 | 0.789764 |
| 1979 | 0.766233 |
| 1978 | 0.743789 |
| 1977 | 0.721478 |
| 1976 | 0.701602 |
| 1975 | 0.686258 |
| 1974 | 0.674748 |
| 1973 | 0.667066 |
| 1972 | 0.664334 |
| 1971 | 0.664453 |
| 1970 | 0.663589 |
| 1969 | 0.661785 |
| 1968 | 0.660069 |
| 1967 | 0.657849 |
| 1966 | 0.654468 |
| 1965 | 0.651343 |
| 1964 | 0.648651 |
| 1963 | 0.645579 |
| 1962 | 0.641918 |
| 1961 | 0.638101 |
| 1960 | 0.633968 |