| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 8.91532 |
| 2021 | 9.04778 |
| 2020 | 9.19043 |
| 2019 | 9.38186 |
| 2018 | 9.63398 |
| 2017 | 9.94492 |
| 2016 | 10.2973 |
| 2015 | 10.6225 |
| 2014 | 10.7897 |
| 2013 | 10.7725 |
| 2012 | 10.639 |
| 2011 | 10.4072 |
| 2010 | 10.1033 |
| 2009 | 9.8384 |
| 2008 | 9.65076 |
| 2007 | 9.48147 |
| 2006 | 9.35202 |
| 2005 | 9.28145 |
| 2004 | 9.24239 |
| 2003 | 9.24766 |
| 2002 | 9.29706 |
| 2001 | 9.34568 |
| 2000 | 9.39317 |
| 1999 | 9.46109 |
| 1998 | 9.52189 |
| 1997 | 9.56348 |
| 1996 | 9.61257 |
| 1995 | 9.67864 |
| 1994 | 9.77117 |
| 1993 | 9.8855 |
| 1992 | 9.99674 |
| 1991 | 10.0779 |
| 1990 | 10.1073 |
| 1989 | 9.77662 |
| 1988 | 9.29925 |
| 1987 | 9.06469 |
| 1986 | 8.82628 |
| 1985 | 8.5741 |
| 1984 | 8.33426 |
| 1983 | 8.115 |
| 1982 | 7.92262 |
| 1981 | 7.89041 |
| 1980 | 8.00857 |
| 1979 | 8.091 |
| 1978 | 8.26823 |
| 1977 | 8.47422 |
| 1976 | 8.58522 |
| 1975 | 8.68302 |
| 1974 | 8.7461 |
| 1973 | 8.76724 |
| 1972 | 8.73972 |
| 1971 | 8.69545 |
| 1970 | 8.63452 |
| 1969 | 8.55038 |
| 1968 | 8.48164 |
| 1967 | 8.42255 |
| 1966 | 8.33176 |
| 1965 | 8.22268 |
| 1964 | 8.10585 |
| 1963 | 7.98909 |
| 1962 | 7.88517 |
| 1961 | 7.80242 |
| 1960 | 7.74378 |