| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | - |
| 2016 | - |
| 2015 | 23.7128 |
| 2014 | 22.4145 |
| 2013 | 22.6182 |
| 2012 | 23.4158 |
| 2011 | - |
| 2010 | - |
| 2009 | 25.5149 |
| 2008 | 25.0849 |
| 2007 | 25.2227 |
| 2006 | 25.3932 |
| 2005 | 25.5504 |
| 2004 | 25.8467 |
| 2003 | 26.059 |
| 2002 | 26.4013 |
| 2001 | 26.6331 |
| 2000 | 26.7229 |
| 1999 | 26.9854 |
| 1998 | 27.5674 |
| 1997 | 28.1359 |
| 1996 | - |
| 1995 | 25.4911 |
| 1994 | 26.4366 |
| 1993 | 27.2993 |
| 1992 | 28.8141 |
| 1991 | 30.3887 |
| 1990 | 31.6565 |
| 1989 | 32.2942 |
| 1988 | 32.2497 |
| 1987 | 32.2979 |
| 1986 | 32.2148 |
| 1985 | 32.0355 |
| 1984 | 30.8761 |
| 1983 | 31.1836 |
| 1982 | 32.4371 |
| 1981 | 31.6466 |
| 1980 | 32.339 |
| 1979 | 32.2155 |
| 1978 | 31.3422 |
| 1977 | 30.5428 |
| 1976 | 32.0296 |
| 1975 | 33.1413 |
| 1974 | 34.0371 |
| 1973 | 35.4007 |
| 1972 | 33.1017 |
| 1971 | 32.6298 |
| 1970 | 36.4844 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |