| 年份 | 博茨瓦纳 |
|---|---|
| 2023 | - |
| 2022 | 2934.06 |
| 2021 | 2846.45 |
| 2020 | 2828.23 |
| 2019 | 2815.33 |
| 2018 | 2783.31 |
| 2017 | 2696.1 |
| 2016 | 2713.74 |
| 2015 | 2699.95 |
| 2014 | 2658.7 |
| 2013 | 2655.33 |
| 2012 | 2502.95 |
| 2011 | 2352.63 |
| 2010 | 2282.45 |
| 2009 | 2169.96 |
| 2008 | 2108.43 |
| 2007 | 1931 |
| 2006 | 1809.26 |
| 2005 | 1572.37 |
| 2004 | 1445.16 |
| 2003 | 1426.77 |
| 2002 | 1432.9 |
| 2001 | 1391.01 |
| 2000 | 1485.44 |
| 1999 | 1536.52 |
| 1998 | 1569.18 |
| 1997 | 1571.6 |
| 1996 | 1417.83 |
| 1995 | 1378.42 |
| 1994 | 1210.17 |
| 1993 | 1215.74 |
| 1992 | 1281.42 |
| 1991 | 1335.78 |
| 1990 | 1250.16 |
| 1989 | 1052.62 |
| 1988 | 867.97 |
| 1987 | 823.179 |
| 1986 | 850.227 |
| 1985 | 823.477 |
| 1984 | 727.627 |
| 1983 | 702.812 |
| 1982 | 780.782 |
| 1981 | 853.712 |
| 1980 | 911.186 |
| 1979 | 938.668 |
| 1978 | 877.972 |
| 1977 | 819.819 |
| 1976 | 793.508 |
| 1975 | 755.395 |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |