| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.589219 |
| 2021 | 0.583509 |
| 2020 | 0.578073 |
| 2019 | 0.571066 |
| 2018 | 0.567343 |
| 2017 | 0.565508 |
| 2016 | 0.561783 |
| 2015 | 0.558488 |
| 2014 | 0.556733 |
| 2013 | 0.557259 |
| 2012 | 0.560042 |
| 2011 | 0.56469 |
| 2010 | 0.570978 |
| 2009 | 0.579165 |
| 2008 | 0.58929 |
| 2007 | 0.60074 |
| 2006 | 0.613003 |
| 2005 | 0.62618 |
| 2004 | 0.640107 |
| 2003 | 0.654299 |
| 2002 | 0.668857 |
| 2001 | 0.685166 |
| 2000 | 0.703665 |
| 1999 | 0.723065 |
| 1998 | 0.743322 |
| 1997 | 0.763989 |
| 1996 | 0.78322 |
| 1995 | 0.799382 |
| 1994 | 0.812686 |
| 1993 | 0.822437 |
| 1992 | 0.828831 |
| 1991 | 0.834359 |
| 1990 | 0.840467 |
| 1989 | 0.847 |
| 1988 | 0.854282 |
| 1987 | 0.86254 |
| 1986 | 0.870678 |
| 1985 | 0.877421 |
| 1984 | 0.882259 |
| 1983 | 0.885441 |
| 1982 | 0.88741 |
| 1981 | 0.889002 |
| 1980 | 0.890756 |
| 1979 | 0.892937 |
| 1978 | 0.895955 |
| 1977 | 0.899254 |
| 1976 | 0.900998 |
| 1975 | 0.900285 |
| 1974 | 0.896995 |
| 1973 | 0.891101 |
| 1972 | 0.882633 |
| 1971 | 0.871736 |
| 1970 | 0.858795 |
| 1969 | 0.844652 |
| 1968 | 0.828545 |
| 1967 | 0.810873 |
| 1966 | 0.795518 |
| 1965 | 0.785383 |
| 1964 | 0.781156 |
| 1963 | 0.783826 |
| 1962 | 0.792523 |
| 1961 | 0.80324 |
| 1960 | 0.813287 |