| 年份 | 赞比亚 |
|---|---|
| 2023 | - |
| 2022 | 15.8443 |
| 2021 | 16.0148 |
| 2020 | 16.216 |
| 2019 | 16.4503 |
| 2018 | 16.7175 |
| 2017 | 17.0067 |
| 2016 | 17.3084 |
| 2015 | 17.6161 |
| 2014 | 17.915 |
| 2013 | 18.1849 |
| 2012 | 18.413 |
| 2011 | 18.6018 |
| 2010 | 18.7589 |
| 2009 | 18.8976 |
| 2008 | 19.0036 |
| 2007 | 19.0795 |
| 2006 | 19.1327 |
| 2005 | 19.184 |
| 2004 | 19.2462 |
| 2003 | 19.3244 |
| 2002 | 19.4247 |
| 2001 | 19.5519 |
| 2000 | 19.686 |
| 1999 | 19.7718 |
| 1998 | 19.8199 |
| 1997 | 19.8458 |
| 1996 | 19.8513 |
| 1995 | 19.8208 |
| 1994 | 19.7871 |
| 1993 | 19.77 |
| 1992 | 19.7683 |
| 1991 | 19.787 |
| 1990 | 19.8209 |
| 1989 | 19.8501 |
| 1988 | 19.8761 |
| 1987 | 19.9066 |
| 1986 | 19.934 |
| 1985 | 19.95 |
| 1984 | 19.9764 |
| 1983 | 20.0506 |
| 1982 | 20.1836 |
| 1981 | 20.3451 |
| 1980 | 20.4938 |
| 1979 | 20.5992 |
| 1978 | 20.6518 |
| 1977 | 20.6748 |
| 1976 | 20.6654 |
| 1975 | 20.6257 |
| 1974 | 20.5636 |
| 1973 | 20.4749 |
| 1972 | 20.3544 |
| 1971 | 20.2182 |
| 1970 | 20.0741 |
| 1969 | 19.9795 |
| 1968 | 19.9616 |
| 1967 | 19.965 |
| 1966 | 19.9605 |
| 1965 | 19.9355 |
| 1964 | 19.8855 |
| 1963 | 19.8108 |
| 1962 | 19.7132 |
| 1961 | 19.5986 |
| 1960 | 19.4738 |