| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.339447 |
| 2021 | 0.340922 |
| 2020 | 0.341132 |
| 2019 | 0.339336 |
| 2018 | 0.337661 |
| 2017 | 0.337336 |
| 2016 | 0.338163 |
| 2015 | 0.33985 |
| 2014 | 0.342363 |
| 2013 | 0.345691 |
| 2012 | 0.349719 |
| 2011 | 0.354504 |
| 2010 | 0.360181 |
| 2009 | 0.366808 |
| 2008 | 0.373987 |
| 2007 | 0.381627 |
| 2006 | 0.390085 |
| 2005 | 0.399721 |
| 2004 | 0.410353 |
| 2003 | 0.422048 |
| 2002 | 0.434468 |
| 2001 | 0.446793 |
| 2000 | 0.458197 |
| 1999 | 0.467843 |
| 1998 | 0.475375 |
| 1997 | 0.481146 |
| 1996 | 0.486366 |
| 1995 | 0.49162 |
| 1994 | 0.497069 |
| 1993 | 0.502847 |
| 1992 | 0.508931 |
| 1991 | 0.514514 |
| 1990 | 0.518975 |
| 1989 | 0.522389 |
| 1988 | 0.524797 |
| 1987 | 0.526437 |
| 1986 | 0.528508 |
| 1985 | 0.53141 |
| 1984 | 0.53476 |
| 1983 | 0.53872 |
| 1982 | 0.542576 |
| 1981 | 0.544719 |
| 1980 | 0.544337 |
| 1979 | 0.541572 |
| 1978 | 0.53675 |
| 1977 | 0.530017 |
| 1976 | 0.521909 |
| 1975 | 0.513042 |
| 1974 | 0.503069 |
| 1973 | 0.491176 |
| 1972 | 0.47839 |
| 1971 | 0.467023 |
| 1970 | 0.458807 |
| 1969 | 0.45465 |
| 1968 | 0.455363 |
| 1967 | 0.460064 |
| 1966 | 0.466001 |
| 1965 | 0.471592 |
| 1964 | 0.477714 |
| 1963 | 0.484508 |
| 1962 | 0.490753 |
| 1961 | 0.49634 |
| 1960 | 0.500995 |