年份 | 博茨瓦纳 |
---|---|
2023 | - |
2022 | - |
2021 | 18.6 |
2020 | 19.2 |
2019 | 19.8 |
2018 | 20.4 |
2017 | 20.9 |
2016 | 21.3 |
2015 | 21.7 |
2014 | 22 |
2013 | 22.4 |
2012 | 22.7 |
2011 | 23 |
2010 | 23.2 |
2009 | 23.5 |
2008 | 23.7 |
2007 | 24 |
2006 | 24.3 |
2005 | 24.6 |
2004 | 25 |
2003 | 25.4 |
2002 | 25.7 |
2001 | 25.9 |
2000 | 25.8 |
1999 | 25.4 |
1998 | 24.6 |
1997 | 23.4 |
1996 | 21.7 |
1995 | 19.6 |
1994 | 17.1 |
1993 | 14.3 |
1992 | 11.5 |
1991 | 8.8 |
1990 | 6.4 |
1989 | - |
1988 | - |
1987 | - |
1986 | - |
1985 | - |
1984 | - |
1983 | - |
1982 | - |
1981 | - |
1980 | - |
1979 | - |
1978 | - |
1977 | - |
1976 | - |
1975 | - |
1974 | - |
1973 | - |
1972 | - |
1971 | - |
1970 | - |
1969 | - |
1968 | - |
1967 | - |
1966 | - |
1965 | - |
1964 | - |
1963 | - |
1962 | - |
1961 | - |
1960 | - |