| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.03058 |
| 2020 | 1.93029 |
| 2019 | 1.43731 |
| 2018 | 1.26283 |
| 2017 | 3.35579 |
| 2016 | 2.60379 |
| 2015 | 1.87527 |
| 2014 | 1.64154 |
| 2013 | 1.17403 |
| 2012 | 1.73059 |
| 2011 | 2.07194 |
| 2010 | 2.3909 |
| 2009 | 1.93055 |
| 2008 | 2.25104 |
| 2007 | 5.84952 |
| 2006 | 2.66281 |
| 2005 | 1.18277 |
| 2004 | 0.794489 |
| 2003 | 0.930611 |
| 2002 | 0.598634 |
| 2001 | 0.634861 |
| 2000 | 0.592006 |
| 1999 | 0.532667 |
| 1998 | 0.755601 |
| 1997 | 0.9051 |
| 1996 | 0.635077 |
| 1995 | 0.812419 |
| 1994 | 0.5696 |
| 1993 | 0.483065 |
| 1992 | 0.661164 |
| 1991 | 1.30291 |
| 1990 | 10.6504 |
| 1989 | 31.9535 |
| 1988 | 40.0702 |
| 1987 | 2.32652 |
| 1986 | 1.39555 |
| 1985 | 4.62439 |
| 1984 | 3.61017 |
| 1983 | 2.40462 |
| 1982 | 2.93243 |
| 1981 | 4.3635 |
| 1980 | 6.32709 |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |