| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.127495 |
| 2021 | 0.134884 |
| 2020 | 0.141943 |
| 2019 | 0.146227 |
| 2018 | 0.148765 |
| 2017 | 0.151473 |
| 2016 | 0.154725 |
| 2015 | 0.158718 |
| 2014 | 0.163396 |
| 2013 | 0.168668 |
| 2012 | 0.17446 |
| 2011 | 0.180682 |
| 2010 | 0.18744 |
| 2009 | 0.194837 |
| 2008 | 0.202582 |
| 2007 | 0.210559 |
| 2006 | 0.218768 |
| 2005 | 0.227043 |
| 2004 | 0.235092 |
| 2003 | 0.242998 |
| 2002 | 0.250801 |
| 2001 | 0.258332 |
| 2000 | 0.265318 |
| 1999 | 0.271101 |
| 1998 | 0.275777 |
| 1997 | 0.279678 |
| 1996 | 0.283092 |
| 1995 | 0.285964 |
| 1994 | 0.288402 |
| 1993 | 0.290363 |
| 1992 | 0.291755 |
| 1991 | 0.292681 |
| 1990 | 0.293187 |
| 1989 | 0.293254 |
| 1988 | 0.29294 |
| 1987 | 0.29235 |
| 1986 | 0.292027 |
| 1985 | 0.292003 |
| 1984 | 0.291924 |
| 1983 | 0.29213 |
| 1982 | 0.292819 |
| 1981 | 0.292929 |
| 1980 | 0.291322 |
| 1979 | 0.288281 |
| 1978 | 0.283961 |
| 1977 | 0.278686 |
| 1976 | 0.273908 |
| 1975 | 0.270767 |
| 1974 | 0.269313 |
| 1973 | 0.270026 |
| 1972 | 0.273016 |
| 1971 | 0.276448 |
| 1970 | 0.278922 |
| 1969 | 0.281427 |
| 1968 | 0.28394 |
| 1967 | 0.285301 |
| 1966 | 0.28632 |
| 1965 | 0.287676 |
| 1964 | 0.28904 |
| 1963 | 0.289993 |
| 1962 | 0.290572 |
| 1961 | 0.290552 |
| 1960 | 0.289518 |