| 年份 | 博茨瓦纳  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 14.5641 | 
| 2021 | 8.3499 | 
| 2020 | 4.37899 | 
| 2019 | 0.507585 | 
| 2018 | 0.057197 | 
| 2017 | -2.64992 | 
| 2016 | 11.9049 | 
| 2015 | 3.73032 | 
| 2014 | 11.9041 | 
| 2013 | 1.53212 | 
| 2012 | 3.01184 | 
| 2011 | 12.6533 | 
| 2010 | 7.68306 | 
| 2009 | 15.1089 | 
| 2008 | 9.37273 | 
| 2007 | 6.0292 | 
| 2006 | 7.47313 | 
| 2005 | 15.4717 | 
| 2004 | 10.0788 | 
| 2003 | 3.25908 | 
| 2002 | 1.18737 | 
| 2001 | 8.31283 | 
| 2000 | 14.171 | 
| 1999 | 14.2352 | 
| 1998 | 9.96727 | 
| 1997 | 4.99061 | 
| 1996 | 16.1122 | 
| 1995 | 7.15529 | 
| 1994 | 9.4638 | 
| 1993 | 13.0647 | 
| 1992 | 6.63928 | 
| 1991 | 5.17771 | 
| 1990 | 6.30002 | 
| 1989 | - | 
| 1988 | - | 
| 1987 | - | 
| 1986 | - | 
| 1985 | - | 
| 1984 | - | 
| 1983 | - | 
| 1982 | - | 
| 1981 | - | 
| 1980 | - | 
| 1979 | - | 
| 1978 | - | 
| 1977 | - | 
| 1976 | - | 
| 1975 | - | 
| 1974 | - | 
| 1973 | - | 
| 1972 | - | 
| 1971 | - | 
| 1970 | - | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |