| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | 130.541 |
| 2021 | 115.838 |
| 2020 | 109.604 |
| 2019 | 109.169 |
| 2018 | 107.71 |
| 2017 | 103.49 |
| 2016 | 100 |
| 2015 | 96.6636 |
| 2014 | 93.2081 |
| 2013 | 89.3195 |
| 2012 | 86.4365 |
| 2011 | 82.914 |
| 2010 | 77.5205 |
| 2009 | 74.3722 |
| 2008 | 67.6423 |
| 2007 | 67.4489 |
| 2006 | 65.2409 |
| 2005 | 63.3207 |
| 2004 | 58.7803 |
| 2003 | 55.0133 |
| 2002 | 51.2666 |
| 2001 | 48.8665 |
| 2000 | 43.5232 |
| 1999 | 37.4359 |
| 1998 | 35.7963 |
| 1997 | 29.4203 |
| 1996 | 27.9073 |
| 1995 | 26.7171 |
| 1994 | 24.9792 |
| 1993 | 22.4569 |
| 1992 | 20.2841 |
| 1991 | 18.9015 |
| 1990 | 17.7817 |
| 1989 | 16.5105 |
| 1988 | 13.5127 |
| 1987 | 10.7523 |
| 1986 | 10.1723 |
| 1985 | 9.42432 |
| 1984 | 9.25759 |
| 1983 | 8.45737 |
| 1982 | 7.65131 |
| 1981 | 6.924 |
| 1980 | 6.10687 |
| 1979 | 5.17185 |
| 1978 | 4.45329 |
| 1977 | 3.92007 |
| 1976 | 3.56568 |
| 1975 | 3.29719 |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |