| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 1.71444 |
| 2021 | 1.81882 |
| 2020 | 1.9329 |
| 2019 | 2.02724 |
| 2018 | 2.10156 |
| 2017 | 2.17455 |
| 2016 | 2.22916 |
| 2015 | 2.29222 |
| 2014 | 2.36901 |
| 2013 | 2.41088 |
| 2012 | 2.46172 |
| 2011 | 2.55586 |
| 2010 | 2.68592 |
| 2009 | 2.75659 |
| 2008 | 2.77915 |
| 2007 | 2.75359 |
| 2006 | 2.68611 |
| 2005 | 2.55315 |
| 2004 | 2.42827 |
| 2003 | 2.34867 |
| 2002 | 2.32615 |
| 2001 | 2.68883 |
| 2000 | 3.46847 |
| 1999 | 3.32999 |
| 1998 | 3.30427 |
| 1997 | 3.28982 |
| 1996 | 3.21619 |
| 1995 | 3.19383 |
| 1994 | 3.18399 |
| 1993 | 3.17019 |
| 1992 | 3.20591 |
| 1991 | 3.18091 |
| 1990 | 2.65226 |
| 1989 | 2.74686 |
| 1988 | 2.85071 |
| 1987 | 3.00325 |
| 1986 | 3.09402 |
| 1985 | 3.09465 |
| 1984 | 3.16639 |
| 1983 | 3.3179 |
| 1982 | 3.30714 |
| 1981 | 2.98316 |
| 1980 | 1.31941 |
| 1979 | 1.36372 |
| 1978 | 1.41631 |
| 1977 | 1.4627 |
| 1976 | 1.48528 |
| 1975 | 1.48889 |
| 1974 | 1.47494 |
| 1973 | 1.46936 |
| 1972 | 1.44687 |
| 1971 | 1.4382 |
| 1970 | 1.50802 |
| 1969 | 0.960545 |
| 1968 | 1.12873 |
| 1967 | 1.24311 |
| 1966 | 1.35218 |
| 1965 | 1.44619 |
| 1964 | 1.53744 |
| 1963 | 2.03424 |
| 1962 | 2.14422 |
| 1961 | 2.16653 |
| 1960 | - |