| 年份 | 纳米比亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 3.16792 | 
| 2020 | 1.03656 | 
| 2019 | 0.814901 | 
| 2018 | 0.772592 | 
| 2017 | 2.57515 | 
| 2016 | 1.63513 | 
| 2015 | 1.00339 | 
| 2014 | 0.947612 | 
| 2013 | 0.564326 | 
| 2012 | 1.17566 | 
| 2011 | 1.5856 | 
| 2010 | 1.90274 | 
| 2009 | 1.18238 | 
| 2008 | 1.52185 | 
| 2007 | 5.30737 | 
| 2006 | 2.29309 | 
| 2005 | 0.754895 | 
| 2004 | 0.321997 | 
| 2003 | 0.350172 | 
| 2002 | 0.117987 | 
| 2001 | 0.25236 | 
| 2000 | 0.235658 | 
| 1999 | 0.227847 | 
| 1998 | 0.225742 | 
| 1997 | 0.430603 | 
| 1996 | 0.117946 | 
| 1995 | 0.305952 | 
| 1994 | 0.219321 | 
| 1993 | 0.1638 | 
| 1992 | 0.283057 | 
| 1991 | 0.87831 | 
| 1990 | 10.2025 | 
| 1989 | 31.549 | 
| 1988 | 39.6676 | 
| 1987 | 1.94064 | 
| 1986 | 0.887308 | 
| 1985 | 4.28068 | 
| 1984 | 3.2107 | 
| 1983 | 2.04138 | 
| 1982 | 2.31993 | 
| 1981 | 3.97805 | 
| 1980 | 5.93591 | 
| 1979 | - | 
| 1978 | - | 
| 1977 | - | 
| 1976 | - | 
| 1975 | - | 
| 1974 | - | 
| 1973 | - | 
| 1972 | - | 
| 1971 | - | 
| 1970 | - | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |