| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 7.97761 |
| 2020 | 8.06387 |
| 2019 | 8.15012 |
| 2018 | 8.23637 |
| 2017 | 8.32262 |
| 2016 | 8.40887 |
| 2015 | 8.49512 |
| 2014 | 8.58137 |
| 2013 | 8.66762 |
| 2012 | 8.75387 |
| 2011 | 8.84012 |
| 2010 | 8.92637 |
| 2009 | 9.01262 |
| 2008 | 9.09887 |
| 2007 | 9.18512 |
| 2006 | 9.27137 |
| 2005 | 9.35762 |
| 2004 | 9.44387 |
| 2003 | 9.53012 |
| 2002 | 9.61637 |
| 2001 | 9.70263 |
| 2000 | 9.78888 |
| 1999 | 9.87513 |
| 1998 | 9.96138 |
| 1997 | 10.0476 |
| 1996 | 10.1339 |
| 1995 | 10.2201 |
| 1994 | 10.3064 |
| 1993 | 10.3926 |
| 1992 | 10.4789 |
| 1991 | 10.5651 |
| 1990 | 10.6514 |
| 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 | - |