| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | 8.07238 |
| 2021 | 8.25242 |
| 2020 | 8.66286 |
| 2019 | 8.45959 |
| 2018 | 8.14911 |
| 2017 | 9.27106 |
| 2016 | 9.9649 |
| 2015 | 7.14148 |
| 2014 | 6.14716 |
| 2013 | 6.16763 |
| 2012 | 6.11376 |
| 2011 | 6.42521 |
| 2010 | 6.16589 |
| 2009 | 5.98189 |
| 2008 | 6.4559 |
| 2007 | 7.57866 |
| 2006 | 8.07114 |
| 2005 | 8.22652 |
| 2004 | 8.47811 |
| 2003 | 9.15458 |
| 2002 | 9.0043 |
| 2001 | 8.98636 |
| 2000 | 8.16921 |
| 1999 | 7.58781 |
| 1998 | 8.63154 |
| 1997 | 8.08018 |
| 1996 | 7.7953 |
| 1995 | 9.13826 |
| 1994 | 10.3192 |
| 1993 | 10.2017 |
| 1992 | 9.98411 |
| 1991 | 10.4205 |
| 1990 | 10.2721 |
| 1989 | 9.58924 |
| 1988 | 10.0249 |
| 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 | - |