| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 18.3308 |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | 8.94308 |
| 2016 | - |
| 2015 | 11.5135 |
| 2014 | 15.2772 |
| 2013 | 14.7663 |
| 2012 | 14.2229 |
| 2011 | - |
| 2010 | - |
| 2009 | 16.3659 |
| 2008 | 16.2818 |
| 2007 | 15.5611 |
| 2006 | 14.4893 |
| 2005 | 15.4792 |
| 2004 | 16.1301 |
| 2003 | 17.3258 |
| 2002 | 17.7366 |
| 2001 | 17.9462 |
| 2000 | 19.3947 |
| 1999 | 20.1757 |
| 1998 | 19.3647 |
| 1997 | - |
| 1996 | 21.9102 |
| 1995 | 22.2366 |
| 1994 | 12.8189 |
| 1993 | 12.1081 |
| 1992 | 11.216 |
| 1991 | 10.4165 |
| 1990 | 12.5452 |
| 1989 | 11.5889 |
| 1988 | 11.5776 |
| 1987 | 11.4195 |
| 1986 | 11.6124 |
| 1985 | 11.9461 |
| 1984 | 13.4871 |
| 1983 | 13.4558 |
| 1982 | - |
| 1981 | 17.3552 |
| 1980 | 21.4417 |
| 1979 | 25.9201 |
| 1978 | 27.9062 |
| 1977 | 29.1391 |
| 1976 | 33.6595 |
| 1975 | 38.2082 |
| 1974 | 44.8018 |
| 1973 | 49.0133 |
| 1972 | 51.9335 |
| 1971 | 53.3905 |
| 1970 | 50.4686 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |