| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.366616 |
| 2021 | 0.36893 |
| 2020 | 0.372009 |
| 2019 | 0.37382 |
| 2018 | 0.376453 |
| 2017 | 0.377642 |
| 2016 | 0.376256 |
| 2015 | 0.375309 |
| 2014 | 0.37584 |
| 2013 | 0.378702 |
| 2012 | 0.383777 |
| 2011 | 0.390365 |
| 2010 | 0.398026 |
| 2009 | 0.406829 |
| 2008 | 0.416178 |
| 2007 | 0.426142 |
| 2006 | 0.437769 |
| 2005 | 0.451798 |
| 2004 | 0.467622 |
| 2003 | 0.484758 |
| 2002 | 0.503344 |
| 2001 | 0.523132 |
| 2000 | 0.543402 |
| 1999 | 0.562446 |
| 1998 | 0.58001 |
| 1997 | 0.596615 |
| 1996 | 0.612914 |
| 1995 | 0.628619 |
| 1994 | 0.643968 |
| 1993 | 0.659346 |
| 1992 | 0.67452 |
| 1991 | 0.688416 |
| 1990 | 0.70048 |
| 1989 | 0.711177 |
| 1988 | 0.720646 |
| 1987 | 0.729203 |
| 1986 | 0.738572 |
| 1985 | 0.748744 |
| 1984 | 0.758535 |
| 1983 | 0.768402 |
| 1982 | 0.778824 |
| 1981 | 0.787354 |
| 1980 | 0.791663 |
| 1979 | 0.792416 |
| 1978 | 0.789665 |
| 1977 | 0.784088 |
| 1976 | 0.778144 |
| 1975 | 0.773433 |
| 1974 | 0.769706 |
| 1973 | 0.768228 |
| 1972 | 0.768867 |
| 1971 | 0.76706 |
| 1970 | 0.759646 |
| 1969 | 0.749066 |
| 1968 | 0.734962 |
| 1967 | 0.716535 |
| 1966 | 0.700715 |
| 1965 | 0.693022 |
| 1964 | 0.693536 |
| 1963 | 0.703413 |
| 1962 | 0.721884 |
| 1961 | 0.741708 |
| 1960 | 0.757092 |