| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 4.7029 |
| 2021 | 4.64845 |
| 2020 | 4.59477 |
| 2019 | 4.53254 |
| 2018 | 4.45888 |
| 2017 | 4.3802 |
| 2016 | 4.29802 |
| 2015 | 4.21436 |
| 2014 | 4.13272 |
| 2013 | 4.05406 |
| 2012 | 3.97831 |
| 2011 | 3.90996 |
| 2010 | 3.85035 |
| 2009 | 3.80079 |
| 2008 | 3.76376 |
| 2007 | 3.73732 |
| 2006 | 3.71795 |
| 2005 | 3.70037 |
| 2004 | 3.68116 |
| 2003 | 3.65687 |
| 2002 | 3.62788 |
| 2001 | 3.59455 |
| 2000 | 3.5581 |
| 1999 | 3.5248 |
| 1998 | 3.4943 |
| 1997 | 3.4645 |
| 1996 | 3.43673 |
| 1995 | 3.41486 |
| 1994 | 3.39528 |
| 1993 | 3.3642 |
| 1992 | 3.3345 |
| 1991 | 3.32146 |
| 1990 | 3.31373 |
| 1989 | 3.31205 |
| 1988 | 3.33077 |
| 1987 | 3.35393 |
| 1986 | 3.36392 |
| 1985 | 3.37431 |
| 1984 | 3.39084 |
| 1983 | 3.41501 |
| 1982 | 3.44562 |
| 1981 | 3.48202 |
| 1980 | 3.52374 |
| 1979 | 3.56977 |
| 1978 | 3.61925 |
| 1977 | 3.67002 |
| 1976 | 3.72109 |
| 1975 | 3.77169 |
| 1974 | 3.81955 |
| 1973 | 3.86198 |
| 1972 | 3.9009 |
| 1971 | 3.94158 |
| 1970 | 3.98701 |
| 1969 | 4.03332 |
| 1968 | 4.08045 |
| 1967 | 4.12916 |
| 1966 | 4.17198 |
| 1965 | 4.20409 |
| 1964 | 4.22597 |
| 1963 | 4.23629 |
| 1962 | 4.23711 |
| 1961 | 4.23879 |
| 1960 | 4.24771 |