| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.250325 |
| 2021 | 0.258624 |
| 2020 | 0.265635 |
| 2019 | 0.269001 |
| 2018 | 0.271287 |
| 2017 | 0.274079 |
| 2016 | 0.277509 |
| 2015 | 0.281642 |
| 2014 | 0.286355 |
| 2013 | 0.291489 |
| 2012 | 0.297059 |
| 2011 | 0.303235 |
| 2010 | 0.310197 |
| 2009 | 0.317895 |
| 2008 | 0.326128 |
| 2007 | 0.334679 |
| 2006 | 0.343089 |
| 2005 | 0.351021 |
| 2004 | 0.358136 |
| 2003 | 0.3642 |
| 2002 | 0.369273 |
| 2001 | 0.37393 |
| 2000 | 0.378357 |
| 1999 | 0.382078 |
| 1998 | 0.385395 |
| 1997 | 0.388584 |
| 1996 | 0.391291 |
| 1995 | 0.393107 |
| 1994 | 0.394279 |
| 1993 | 0.394824 |
| 1992 | 0.394707 |
| 1991 | 0.394318 |
| 1990 | 0.393935 |
| 1989 | 0.393591 |
| 1988 | 0.393385 |
| 1987 | 0.393297 |
| 1986 | 0.393059 |
| 1985 | 0.392259 |
| 1984 | 0.390634 |
| 1983 | 0.387887 |
| 1982 | 0.383398 |
| 1981 | 0.377492 |
| 1980 | 0.370942 |
| 1979 | 0.363815 |
| 1978 | 0.356028 |
| 1977 | 0.348136 |
| 1976 | 0.341222 |
| 1975 | 0.336175 |
| 1974 | 0.333132 |
| 1973 | 0.332415 |
| 1972 | 0.333722 |
| 1971 | 0.335741 |
| 1970 | 0.337786 |
| 1969 | 0.340424 |
| 1968 | 0.343354 |
| 1967 | 0.345745 |
| 1966 | 0.3478 |
| 1965 | 0.349485 |
| 1964 | 0.350471 |
| 1963 | 0.34994 |
| 1962 | 0.347922 |
| 1961 | 0.345058 |
| 1960 | 0.341753 |