| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.331796 |
| 2021 | 0.357527 |
| 2020 | 0.371403 |
| 2019 | 0.370119 |
| 2018 | 0.365664 |
| 2017 | 0.362526 |
| 2016 | 0.360134 |
| 2015 | 0.358037 |
| 2014 | 0.356737 |
| 2013 | 0.356397 |
| 2012 | 0.356692 |
| 2011 | 0.357219 |
| 2010 | 0.357339 |
| 2009 | 0.356806 |
| 2008 | 0.35528 |
| 2007 | 0.3525 |
| 2006 | 0.3491 |
| 2005 | 0.345767 |
| 2004 | 0.341982 |
| 2003 | 0.339046 |
| 2002 | 0.338532 |
| 2001 | 0.339174 |
| 2000 | 0.340126 |
| 1999 | 0.341654 |
| 1998 | 0.343947 |
| 1997 | 0.346922 |
| 1996 | 0.350272 |
| 1995 | 0.354018 |
| 1994 | 0.358368 |
| 1993 | 0.363073 |
| 1992 | 0.367637 |
| 1991 | 0.371992 |
| 1990 | 0.377322 |
| 1989 | 0.394023 |
| 1988 | 0.414074 |
| 1987 | 0.423307 |
| 1986 | 0.430673 |
| 1985 | 0.436537 |
| 1984 | 0.440442 |
| 1983 | 0.442091 |
| 1982 | 0.442574 |
| 1981 | 0.438369 |
| 1980 | 0.430393 |
| 1979 | 0.424771 |
| 1978 | 0.416942 |
| 1977 | 0.409826 |
| 1976 | 0.407824 |
| 1975 | 0.408801 |
| 1974 | 0.413145 |
| 1973 | 0.420262 |
| 1972 | 0.430357 |
| 1971 | 0.440978 |
| 1970 | 0.44943 |
| 1969 | 0.455416 |
| 1968 | 0.457235 |
| 1967 | 0.455114 |
| 1966 | 0.453621 |
| 1965 | 0.454594 |
| 1964 | 0.45771 |
| 1963 | 0.463514 |
| 1962 | 0.471788 |
| 1961 | 0.478817 |
| 1960 | 0.479936 |