| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.500741 |
| 2021 | 0.514754 |
| 2020 | 0.515412 |
| 2019 | 0.503226 |
| 2018 | 0.488829 |
| 2017 | 0.475679 |
| 2016 | 0.464531 |
| 2015 | 0.455613 |
| 2014 | 0.448227 |
| 2013 | 0.442049 |
| 2012 | 0.437197 |
| 2011 | 0.433063 |
| 2010 | 0.429289 |
| 2009 | 0.426978 |
| 2008 | 0.427095 |
| 2007 | 0.428952 |
| 2006 | 0.431168 |
| 2005 | 0.432971 |
| 2004 | 0.434287 |
| 2003 | 0.433438 |
| 2002 | 0.430695 |
| 2001 | 0.429016 |
| 2000 | 0.428918 |
| 1999 | 0.428926 |
| 1998 | 0.430707 |
| 1997 | 0.434993 |
| 1996 | 0.439559 |
| 1995 | 0.444804 |
| 1994 | 0.451731 |
| 1993 | 0.460312 |
| 1992 | 0.470268 |
| 1991 | 0.480857 |
| 1990 | 0.491408 |
| 1989 | 0.515144 |
| 1988 | 0.541698 |
| 1987 | 0.553124 |
| 1986 | 0.562877 |
| 1985 | 0.573399 |
| 1984 | 0.584527 |
| 1983 | 0.597168 |
| 1982 | 0.61088 |
| 1981 | 0.61872 |
| 1980 | 0.620468 |
| 1979 | 0.623738 |
| 1978 | 0.621964 |
| 1977 | 0.618248 |
| 1976 | 0.618258 |
| 1975 | 0.617265 |
| 1974 | 0.614735 |
| 1973 | 0.607838 |
| 1972 | 0.598573 |
| 1971 | 0.592057 |
| 1970 | 0.591688 |
| 1969 | 0.599299 |
| 1968 | 0.617609 |
| 1967 | 0.644383 |
| 1966 | 0.670496 |
| 1965 | 0.688612 |
| 1964 | 0.697586 |
| 1963 | 0.695023 |
| 1962 | 0.682018 |
| 1961 | 0.670033 |
| 1960 | 0.667339 |