| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.851188 |
| 2021 | 0.875352 |
| 2020 | 0.887605 |
| 2019 | 0.884518 |
| 2018 | 0.876871 |
| 2017 | 0.86517 |
| 2016 | 0.84738 |
| 2015 | 0.826702 |
| 2014 | 0.805425 |
| 2013 | 0.784702 |
| 2012 | 0.765416 |
| 2011 | 0.749234 |
| 2010 | 0.73638 |
| 2009 | 0.725348 |
| 2008 | 0.715371 |
| 2007 | 0.706539 |
| 2006 | 0.698044 |
| 2005 | 0.689905 |
| 2004 | 0.684602 |
| 2003 | 0.684126 |
| 2002 | 0.688324 |
| 2001 | 0.695539 |
| 2000 | 0.704096 |
| 1999 | 0.71327 |
| 1998 | 0.719114 |
| 1997 | 0.720295 |
| 1996 | 0.721553 |
| 1995 | 0.724742 |
| 1994 | 0.728249 |
| 1993 | 0.735092 |
| 1992 | 0.746489 |
| 1991 | 0.758266 |
| 1990 | 0.771307 |
| 1989 | 0.808274 |
| 1988 | 0.853003 |
| 1987 | 0.877446 |
| 1986 | 0.900824 |
| 1985 | 0.92223 |
| 1984 | 0.939766 |
| 1983 | 0.954608 |
| 1982 | 0.967758 |
| 1981 | 0.972305 |
| 1980 | 0.972271 |
| 1979 | 0.981683 |
| 1978 | 0.990389 |
| 1977 | 1.00167 |
| 1976 | 1.0215 |
| 1975 | 1.04043 |
| 1974 | 1.05826 |
| 1973 | 1.07171 |
| 1972 | 1.08113 |
| 1971 | 1.08672 |
| 1970 | 1.08781 |
| 1969 | 1.08358 |
| 1968 | 1.07193 |
| 1967 | 1.05589 |
| 1966 | 1.04448 |
| 1965 | 1.04438 |
| 1964 | 1.05756 |
| 1963 | 1.08739 |
| 1962 | 1.13009 |
| 1961 | 1.16923 |
| 1960 | 1.19298 |