| 年份 | 坦桑尼亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 2.56976 | 
| 2021 | 2.5377 | 
| 2020 | 2.51737 | 
| 2019 | 2.50808 | 
| 2018 | 2.50953 | 
| 2017 | 2.51999 | 
| 2016 | 2.53655 | 
| 2015 | 2.55926 | 
| 2014 | 2.58964 | 
| 2013 | 2.62745 | 
| 2012 | 2.67139 | 
| 2011 | 2.71892 | 
| 2010 | 2.76718 | 
| 2009 | 2.81303 | 
| 2008 | 2.85376 | 
| 2007 | 2.88551 | 
| 2006 | 2.90488 | 
| 2005 | 2.91093 | 
| 2004 | 2.8988 | 
| 2003 | 2.88286 | 
| 2002 | 2.87426 | 
| 2001 | 2.86031 | 
| 2000 | 2.84302 | 
| 1999 | 2.82932 | 
| 1998 | 2.79225 | 
| 1997 | 2.72191 | 
| 1996 | 2.61648 | 
| 1995 | 2.50774 | 
| 1994 | 2.45716 | 
| 1993 | 2.45025 | 
| 1992 | 2.43704 | 
| 1991 | 2.41419 | 
| 1990 | 2.40228 | 
| 1989 | 2.40028 | 
| 1988 | 2.41921 | 
| 1987 | 2.43777 | 
| 1986 | 2.45095 | 
| 1985 | 2.47232 | 
| 1984 | 2.50489 | 
| 1983 | 2.54206 | 
| 1982 | 2.57965 | 
| 1981 | 2.6286 | 
| 1980 | 2.67509 | 
| 1979 | 2.71232 | 
| 1978 | 2.73732 | 
| 1977 | 2.75476 | 
| 1976 | 2.76694 | 
| 1975 | 2.77619 | 
| 1974 | 2.78322 | 
| 1973 | 2.78799 | 
| 1972 | 2.79022 | 
| 1971 | 2.79117 | 
| 1970 | 2.79145 | 
| 1969 | 2.79029 | 
| 1968 | 2.78811 | 
| 1967 | 2.78859 | 
| 1966 | 2.79268 | 
| 1965 | 2.79739 | 
| 1964 | 2.80191 | 
| 1963 | 2.80651 | 
| 1962 | 2.81155 | 
| 1961 | 2.81539 | 
| 1960 | 2.81818 |