| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | -5.60551 |
| 2021 | 31.6856 |
| 2020 | -18.569 |
| 2019 | -8.81769 |
| 2018 | 11.8824 |
| 2017 | -5.45745 |
| 2016 | -8.3684 |
| 2015 | -7.36013 |
| 2014 | 1.15422 |
| 2013 | 39.6684 |
| 2012 | 16.7848 |
| 2011 | -0.810798 |
| 2010 | 18.2009 |
| 2009 | -32.0289 |
| 2008 | -11.7847 |
| 2007 | 8.79573 |
| 2006 | 3.13285 |
| 2005 | 18.1908 |
| 2004 | 7.38901 |
| 2003 | -6.99948 |
| 2002 | 7.34598 |
| 2001 | -4.34432 |
| 2000 | 0.803306 |
| 1999 | 27.6485 |
| 1998 | -18.1936 |
| 1997 | 12.9413 |
| 1996 | 13.4703 |
| 1995 | 10.8852 |
| 1994 | 6.84527 |
| 1993 | -0.897205 |
| 1992 | -4.59882 |
| 1991 | 3.5084 |
| 1990 | -0.260387 |
| 1989 | -3.4793 |
| 1988 | 15.1866 |
| 1987 | 17.7391 |
| 1986 | 9.43074 |
| 1985 | 8.8069 |
| 1984 | 7.82691 |
| 1983 | 35.0078 |
| 1982 | 23.0287 |
| 1981 | 3.64872 |
| 1980 | 8.36132 |
| 1979 | 6.47469 |
| 1978 | 13.7444 |
| 1977 | 18.3281 |
| 1976 | 28.4366 |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |