| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 9.18564 |
| 2021 | 9.21336 |
| 2020 | 9.32806 |
| 2019 | 9.52317 |
| 2018 | 9.76077 |
| 2017 | 9.99282 |
| 2016 | 10.2028 |
| 2015 | 10.4146 |
| 2014 | 10.6588 |
| 2013 | 10.9537 |
| 2012 | 11.3088 |
| 2011 | 11.7016 |
| 2010 | 12.0552 |
| 2009 | 12.2279 |
| 2008 | 12.1918 |
| 2007 | 12.0216 |
| 2006 | 11.7402 |
| 2005 | 11.3819 |
| 2004 | 11.0695 |
| 2003 | 10.8441 |
| 2002 | 10.6411 |
| 2001 | 10.4804 |
| 2000 | 10.386 |
| 1999 | 10.3413 |
| 1998 | 10.3655 |
| 1997 | 10.4671 |
| 1996 | 10.5882 |
| 1995 | 10.7043 |
| 1994 | 10.8408 |
| 1993 | 10.977 |
| 1992 | 11.1047 |
| 1991 | 11.2501 |
| 1990 | 11.398 |
| 1989 | 11.4523 |
| 1988 | 11.3964 |
| 1987 | 11.3128 |
| 1986 | 11.202 |
| 1985 | 11.0631 |
| 1984 | 10.8974 |
| 1983 | 10.7052 |
| 1982 | 10.4889 |
| 1981 | 10.2909 |
| 1980 | 10.1419 |
| 1979 | 10.009 |
| 1978 | 9.93182 |
| 1977 | 9.91452 |
| 1976 | 9.9191 |
| 1975 | 9.95393 |
| 1974 | 10.0072 |
| 1973 | 10.0766 |
| 1972 | 10.1499 |
| 1971 | 10.2212 |
| 1970 | 10.2891 |
| 1969 | 10.342 |
| 1968 | 10.3384 |
| 1967 | 10.281 |
| 1966 | 10.2129 |
| 1965 | 10.1305 |
| 1964 | 10.0266 |
| 1963 | 9.94025 |
| 1962 | 9.86741 |
| 1961 | 9.75955 |
| 1960 | 9.6256 |