| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 10.709 |
| 2020 | 8.475 |
| 2019 | 8.248 |
| 2018 | 8.403 |
| 2017 | 8.47 |
| 2016 | 8.686 |
| 2015 | 9.077 |
| 2014 | 9.427 |
| 2013 | 9.91 |
| 2012 | 10.372 |
| 2011 | 10.861 |
| 2010 | 11.062 |
| 2009 | 11.249 |
| 2008 | 11.61 |
| 2007 | 12.046 |
| 2006 | 12.537 |
| 2005 | 12.954 |
| 2004 | 13.199 |
| 2003 | 13.241 |
| 2002 | 13.12 |
| 2001 | 13.129 |
| 2000 | 12.718 |
| 1999 | 12.142 |
| 1998 | 11.569 |
| 1997 | 10.837 |
| 1996 | 10.22 |
| 1995 | 9.524 |
| 1994 | 9.089 |
| 1993 | 8.757 |
| 1992 | 8.568 |
| 1991 | 8.425 |
| 1990 | 8.31 |
| 1989 | 8.387 |
| 1988 | 9.399 |
| 1987 | 9.478 |
| 1986 | 9.815 |
| 1985 | 10.113 |
| 1984 | 10.433 |
| 1983 | 10.76 |
| 1982 | 11.023 |
| 1981 | 11.368 |
| 1980 | 11.63 |
| 1979 | 11.093 |
| 1978 | 11.333 |
| 1977 | 11.689 |
| 1976 | 12.043 |
| 1975 | 12.372 |
| 1974 | 12.786 |
| 1973 | 13.129 |
| 1972 | 13.513 |
| 1971 | 13.875 |
| 1970 | 14.272 |
| 1969 | 14.627 |
| 1968 | 14.975 |
| 1967 | 15.354 |
| 1966 | 15.749 |
| 1965 | 16.047 |
| 1964 | 16.447 |
| 1963 | 16.913 |
| 1962 | 17.321 |
| 1961 | 17.782 |
| 1960 | 18.247 |