| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.308 |
| 2020 | 4.379 |
| 2019 | 4.451 |
| 2018 | 4.536 |
| 2017 | 4.614 |
| 2016 | 4.707 |
| 2015 | 4.793 |
| 2014 | 4.899 |
| 2013 | 5.026 |
| 2012 | 5.146 |
| 2011 | 5.271 |
| 2010 | 5.363 |
| 2009 | 5.452 |
| 2008 | 5.537 |
| 2007 | 5.609 |
| 2006 | 5.686 |
| 2005 | 5.71 |
| 2004 | 5.715 |
| 2003 | 5.726 |
| 2002 | 5.792 |
| 2001 | 5.862 |
| 2000 | 5.926 |
| 1999 | 5.987 |
| 1998 | 6.049 |
| 1997 | 6.117 |
| 1996 | 6.183 |
| 1995 | 6.241 |
| 1994 | 6.274 |
| 1993 | 6.318 |
| 1992 | 6.364 |
| 1991 | 6.447 |
| 1990 | 6.533 |
| 1989 | 6.605 |
| 1988 | 6.675 |
| 1987 | 6.773 |
| 1986 | 6.851 |
| 1985 | 6.921 |
| 1984 | 6.977 |
| 1983 | 7.022 |
| 1982 | 7.063 |
| 1981 | 7.103 |
| 1980 | 7.154 |
| 1979 | 7.232 |
| 1978 | 7.285 |
| 1977 | 7.333 |
| 1976 | 7.366 |
| 1975 | 7.391 |
| 1974 | 7.376 |
| 1973 | 7.393 |
| 1972 | 7.392 |
| 1971 | 7.383 |
| 1970 | 7.367 |
| 1969 | 7.349 |
| 1968 | 7.332 |
| 1967 | 7.317 |
| 1966 | 7.304 |
| 1965 | 7.291 |
| 1964 | 7.274 |
| 1963 | 7.249 |
| 1962 | 7.214 |
| 1961 | 7.169 |
| 1960 | 7.115 |