| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 7.56278 |
| 2021 | 3.52466 |
| 2020 | -8.1014 |
| 2019 | -0.839155 |
| 2018 | 1.05994 |
| 2017 | -1.02725 |
| 2016 | 0.0337945 |
| 2015 | 4.26417 |
| 2014 | 6.09252 |
| 2013 | 5.61472 |
| 2012 | 5.06168 |
| 2011 | 5.09134 |
| 2010 | 6.03925 |
| 2009 | 0.295971 |
| 2008 | 2.64981 |
| 2007 | 5.37404 |
| 2006 | 7.07318 |
| 2005 | 2.52926 |
| 2004 | 12.2695 |
| 2003 | 4.23979 |
| 2002 | 4.78866 |
| 2001 | 1.17795 |
| 2000 | 3.49218 |
| 1999 | 3.36928 |
| 1998 | 3.29159 |
| 1997 | 4.2201 |
| 1996 | 3.19132 |
| 1995 | 3.89901 |
| 1994 | 1.72988 |
| 1993 | -1.57954 |
| 1992 | 7.18934 |
| 1991 | 8.16561 |
| 1990 | 2.04746 |
| 1989 | 1.85868 |
| 1988 | 0.813149 |
| 1987 | 3.55377 |
| 1986 | 4.76727 |
| 1985 | 0.464171 |
| 1984 | -0.236892 |
| 1983 | -1.82345 |
| 1982 | -0.398091 |
| 1981 | 0.971449 |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |