| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 5.16 |
| 2020 | 5.27 |
| 2019 | 6.13 |
| 2018 | 6.87 |
| 2017 | 7.6 |
| 2016 | 7.75 |
| 2015 | 8.11 |
| 2014 | 7.89 |
| 2013 | 8.26 |
| 2012 | 8.74 |
| 2011 | 9.35 |
| 2010 | 9.69 |
| 2009 | 9.75 |
| 2008 | 10.31 |
| 2007 | 11.36 |
| 2006 | 12.39 |
| 2005 | 13.28 |
| 2004 | 14.38 |
| 2003 | 15.26 |
| 2002 | 16.45 |
| 2001 | 18 |
| 2000 | 19.59 |
| 1999 | 21.76 |
| 1998 | 23.99 |
| 1997 | 25.81 |
| 1996 | 26.11 |
| 1995 | 24.84 |
| 1994 | 21.71 |
| 1993 | 17.83 |
| 1992 | 13.76 |
| 1991 | 10.2 |
| 1990 | 7.44 |
| 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 | - |