| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.847229 |
| 2021 | 0.847069 |
| 2020 | 0.833672 |
| 2019 | 0.808446 |
| 2018 | 0.782588 |
| 2017 | 0.759569 |
| 2016 | 0.740642 |
| 2015 | 0.726176 |
| 2014 | 0.714662 |
| 2013 | 0.705318 |
| 2012 | 0.697712 |
| 2011 | 0.690474 |
| 2010 | 0.683152 |
| 2009 | 0.677484 |
| 2008 | 0.675116 |
| 2007 | 0.674479 |
| 2006 | 0.673477 |
| 2005 | 0.671381 |
| 2004 | 0.668374 |
| 2003 | 0.662511 |
| 2002 | 0.655549 |
| 2001 | 0.653142 |
| 2000 | 0.656517 |
| 1999 | 0.663779 |
| 1998 | 0.675826 |
| 1997 | 0.69236 |
| 1996 | 0.708253 |
| 1995 | 0.721866 |
| 1994 | 0.734678 |
| 1993 | 0.746451 |
| 1992 | 0.755809 |
| 1991 | 0.763456 |
| 1990 | 0.77063 |
| 1989 | 0.796302 |
| 1988 | 0.823569 |
| 1987 | 0.827667 |
| 1986 | 0.829652 |
| 1985 | 0.832676 |
| 1984 | 0.836913 |
| 1983 | 0.843852 |
| 1982 | 0.851973 |
| 1981 | 0.850281 |
| 1980 | 0.838291 |
| 1979 | 0.828272 |
| 1978 | 0.811457 |
| 1977 | 0.791603 |
| 1976 | 0.779116 |
| 1975 | 0.77029 |
| 1974 | 0.764684 |
| 1973 | 0.759602 |
| 1972 | 0.75688 |
| 1971 | 0.757544 |
| 1970 | 0.76254 |
| 1969 | 0.773318 |
| 1968 | 0.790832 |
| 1967 | 0.813277 |
| 1966 | 0.834076 |
| 1965 | 0.849209 |
| 1964 | 0.858163 |
| 1963 | 0.859273 |
| 1962 | 0.852803 |
| 1961 | 0.843856 |
| 1960 | 0.836418 |