| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 2.75803 |
| 2021 | 2.84081 |
| 2020 | 2.93382 |
| 2019 | 3.00762 |
| 2018 | 3.06189 |
| 2017 | 3.1136 |
| 2016 | 3.14741 |
| 2015 | 3.1919 |
| 2014 | 3.24712 |
| 2013 | 3.2713 |
| 2012 | 3.30148 |
| 2011 | 3.37711 |
| 2010 | 3.49719 |
| 2009 | 3.55484 |
| 2008 | 3.5711 |
| 2007 | 3.53292 |
| 2006 | 3.45624 |
| 2005 | 3.31267 |
| 2004 | 3.17894 |
| 2003 | 3.08911 |
| 2002 | 3.05653 |
| 2001 | 2.99606 |
| 2000 | 2.76661 |
| 1999 | 2.62005 |
| 1998 | 2.58611 |
| 1997 | 2.56332 |
| 1996 | 2.47803 |
| 1995 | 2.44697 |
| 1994 | 2.42828 |
| 1993 | 2.40546 |
| 1992 | 2.43037 |
| 1991 | 2.49344 |
| 1990 | 2.57137 |
| 1989 | 2.66424 |
| 1988 | 2.76803 |
| 1987 | 2.9205 |
| 1986 | 3.01285 |
| 1985 | 3.01175 |
| 1984 | 3.08342 |
| 1983 | 3.23488 |
| 1982 | 3.22571 |
| 1981 | 3.04799 |
| 1980 | 2.96239 |
| 1979 | 2.96248 |
| 1978 | 2.97562 |
| 1977 | 2.97938 |
| 1976 | 2.96544 |
| 1975 | 2.92627 |
| 1974 | 2.87553 |
| 1973 | 2.82703 |
| 1972 | 2.77178 |
| 1971 | 2.72428 |
| 1970 | 2.9067 |
| 1969 | 3.17152 |
| 1968 | 3.22544 |
| 1967 | 3.21967 |
| 1966 | 3.2187 |
| 1965 | 3.20159 |
| 1964 | 3.19444 |
| 1963 | 3.19663 |
| 1962 | 3.17856 |
| 1961 | 3.15606 |
| 1960 | - |