| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 17.8848 |
| 2020 | 18.7651 |
| 2019 | 18.5868 |
| 2018 | 22.2149 |
| 2017 | 18.3816 |
| 2016 | 19.1408 |
| 2015 | 22.9945 |
| 2014 | 21.9711 |
| 2013 | - |
| 2012 | - |
| 2011 | - |
| 2010 | - |
| 2009 | - |
| 2008 | - |
| 2007 | - |
| 2006 | 11.0689 |
| 2005 | 9.8129 |
| 2004 | 10.1878 |
| 2003 | 9.17102 |
| 2002 | 7.93822 |
| 2001 | 7.90399 |
| 2000 | 7.30473 |
| 1999 | 6.52335 |
| 1998 | 6.2568 |
| 1997 | - |
| 1996 | 5.97427 |
| 1995 | 5.60651 |
| 1994 | 6.63049 |
| 1993 | 5.86348 |
| 1992 | - |
| 1991 | 5.10516 |
| 1990 | - |
| 1989 | - |
| 1988 | - |
| 1987 | 2.71106 |
| 1986 | - |
| 1985 | 2.11034 |
| 1984 | 2.32869 |
| 1983 | 1.9932 |
| 1982 | 1.95571 |
| 1981 | 1.71636 |
| 1980 | 1.63415 |
| 1979 | 1.31566 |
| 1978 | 1.30361 |
| 1977 | 1.12823 |
| 1976 | 1.05209 |
| 1975 | 1.06119 |
| 1974 | 0.71429 |
| 1973 | 0.71626 |
| 1972 | 0.6601 |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |