| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 1.9951 |
| 2021 | 1.95732 |
| 2020 | 1.92548 |
| 2019 | 1.89776 |
| 2018 | 1.87775 |
| 2017 | 1.88372 |
| 2016 | 1.91714 |
| 2015 | 1.9713 |
| 2014 | 2.02387 |
| 2013 | 2.06548 |
| 2012 | 2.10703 |
| 2011 | 2.1419 |
| 2010 | 2.17072 |
| 2009 | 2.16983 |
| 2008 | 2.15982 |
| 2007 | 2.17643 |
| 2006 | 2.20014 |
| 2005 | 2.2173 |
| 2004 | 2.2291 |
| 2003 | 2.22696 |
| 2002 | 2.20239 |
| 2001 | 2.16321 |
| 2000 | 2.1306 |
| 1999 | 2.11078 |
| 1998 | 2.081 |
| 1997 | 2.05456 |
| 1996 | 1.98347 |
| 1995 | 1.89703 |
| 1994 | 1.9186 |
| 1993 | 2.00454 |
| 1992 | 2.03916 |
| 1991 | 2.02346 |
| 1990 | 2.01084 |
| 1989 | 2.00092 |
| 1988 | 1.99758 |
| 1987 | 2.01179 |
| 1986 | 2.03573 |
| 1985 | 2.06289 |
| 1984 | 2.08818 |
| 1983 | 2.11193 |
| 1982 | 2.13575 |
| 1981 | 2.15058 |
| 1980 | 2.16404 |
| 1979 | 2.18157 |
| 1978 | 2.19706 |
| 1977 | 2.19822 |
| 1976 | 2.18911 |
| 1975 | 2.17685 |
| 1974 | 2.16369 |
| 1973 | 2.1495 |
| 1972 | 2.12942 |
| 1971 | 2.10837 |
| 1970 | 2.09162 |
| 1969 | 2.07364 |
| 1968 | 2.05374 |
| 1967 | 2.0453 |
| 1966 | 2.04985 |
| 1965 | 2.05425 |
| 1964 | 2.05556 |
| 1963 | 2.05595 |
| 1962 | 2.05805 |
| 1961 | 2.05665 |
| 1960 | 2.05443 |