| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 19.2354 |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | 9.7893 |
| 2016 | - |
| 2015 | 12.3831 |
| 2014 | 16.0089 |
| 2013 | 15.6665 |
| 2012 | 15.3024 |
| 2011 | - |
| 2010 | - |
| 2009 | 17.3036 |
| 2008 | 17.5091 |
| 2007 | 16.7868 |
| 2006 | 15.6996 |
| 2005 | 17.1757 |
| 2004 | 16.4598 |
| 2003 | 19.0778 |
| 2002 | 19.3455 |
| 2001 | 19.768 |
| 2000 | 21.2627 |
| 1999 | 21.9818 |
| 1998 | 21.3252 |
| 1997 | - |
| 1996 | 23.5071 |
| 1995 | 23.7267 |
| 1994 | 14.034 |
| 1993 | 13.2501 |
| 1992 | 12.5448 |
| 1991 | 12.2706 |
| 1990 | 14.5413 |
| 1989 | 13.4124 |
| 1988 | 14.0553 |
| 1987 | 14.022 |
| 1986 | 14.6396 |
| 1985 | 16.061 |
| 1984 | 18.2428 |
| 1983 | 18.7935 |
| 1982 | - |
| 1981 | 23.3768 |
| 1980 | 27.7912 |
| 1979 | 32.1986 |
| 1978 | 34.1875 |
| 1977 | 35.4557 |
| 1976 | 39.7463 |
| 1975 | 43.9549 |
| 1974 | 49.7883 |
| 1973 | 53.8471 |
| 1972 | 56.3817 |
| 1971 | 57.3197 |
| 1970 | 54.3652 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |