| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.195141 |
| 2020 | 0.200764 |
| 2019 | 0.206741 |
| 2018 | 0.213054 |
| 2017 | 0.219678 |
| 2016 | 0.220662 |
| 2015 | 0.227717 |
| 2014 | 0.235103 |
| 2013 | 0.242862 |
| 2012 | 0.25772 |
| 2011 | 0.252352 |
| 2010 | 0.246518 |
| 2009 | 0.266555 |
| 2008 | 0.237455 |
| 2007 | 0.237783 |
| 2006 | 0.25168 |
| 2005 | 0.2358 |
| 2004 | 0.255809 |
| 2003 | 0.265179 |
| 2002 | 0.245711 |
| 2001 | 0.267073 |
| 2000 | 0.28753 |
| 1999 | 0.295596 |
| 1998 | 0.303443 |
| 1997 | 0.311393 |
| 1996 | 0.319478 |
| 1995 | 0.327494 |
| 1994 | 0.336314 |
| 1993 | 0.336118 |
| 1992 | 0.344177 |
| 1991 | 0.349599 |
| 1990 | 0.376119 |
| 1989 | 0.385916 |
| 1988 | 0.380981 |
| 1987 | 0.383781 |
| 1986 | 0.387028 |
| 1985 | 0.390641 |
| 1984 | 0.393954 |
| 1983 | 0.397389 |
| 1982 | 0.40126 |
| 1981 | 0.404919 |
| 1980 | 0.407661 |
| 1979 | 0.415236 |
| 1978 | 0.504882 |
| 1977 | 0.550514 |
| 1976 | 0.571494 |
| 1975 | 0.593156 |
| 1974 | 0.613902 |
| 1973 | 0.625794 |
| 1972 | 0.641527 |
| 1971 | 0.657285 |
| 1970 | 0.645309 |
| 1969 | 0.657368 |
| 1968 | 0.671354 |
| 1967 | 0.684902 |
| 1966 | 0.703606 |
| 1965 | 0.71186 |
| 1964 | 0.734173 |
| 1963 | 0.750718 |
| 1962 | 0.767882 |
| 1961 | 0.79175 |
| 1960 | - |