| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | 10.653 |
| 2021 | 10.6815 |
| 2020 | 10.6842 |
| 2019 | 10.6674 |
| 2018 | 10.6329 |
| 2017 | 10.6046 |
| 2016 | 10.5972 |
| 2015 | 10.612 |
| 2014 | 10.6443 |
| 2013 | 10.6883 |
| 2012 | 10.7318 |
| 2011 | 10.7864 |
| 2010 | 10.9074 |
| 2009 | 11.1295 |
| 2008 | 11.4247 |
| 2007 | 11.7517 |
| 2006 | 12.0661 |
| 2005 | 12.3295 |
| 2004 | 12.5392 |
| 2003 | 12.7313 |
| 2002 | 12.9479 |
| 2001 | 13.1951 |
| 2000 | 13.4397 |
| 1999 | 13.6468 |
| 1998 | 13.8067 |
| 1997 | 13.9202 |
| 1996 | 13.9983 |
| 1995 | 14.0512 |
| 1994 | 14.0831 |
| 1993 | 14.0878 |
| 1992 | 14.0437 |
| 1991 | 13.9396 |
| 1990 | 13.7925 |
| 1989 | 13.6184 |
| 1988 | 13.4231 |
| 1987 | 13.2167 |
| 1986 | 13.0159 |
| 1985 | 12.8513 |
| 1984 | 12.7469 |
| 1983 | 12.7081 |
| 1982 | 12.7381 |
| 1981 | 12.8681 |
| 1980 | 13.0991 |
| 1979 | 13.3731 |
| 1978 | 13.6499 |
| 1977 | 13.906 |
| 1976 | 14.1457 |
| 1975 | 14.3726 |
| 1974 | 14.5858 |
| 1973 | 14.7865 |
| 1972 | 14.9176 |
| 1971 | 14.8428 |
| 1970 | 14.5982 |
| 1969 | 14.321 |
| 1968 | 14.0309 |
| 1967 | 13.7402 |
| 1966 | 13.4763 |
| 1965 | 13.2686 |
| 1964 | 13.0601 |
| 1963 | 12.6711 |
| 1962 | 12.1534 |
| 1961 | 11.6917 |
| 1960 | 11.296 |