| 年份 | 纳米比亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 12.5184 | 
| 2021 | 12.6857 | 
| 2020 | 12.8666 | 
| 2019 | 13.0542 | 
| 2018 | 13.2264 | 
| 2017 | 13.3718 | 
| 2016 | 13.4739 | 
| 2015 | 13.5163 | 
| 2014 | 13.5032 | 
| 2013 | 13.4376 | 
| 2012 | 13.3176 | 
| 2011 | 13.1605 | 
| 2010 | 13.005 | 
| 2009 | 12.8717 | 
| 2008 | 12.776 | 
| 2007 | 12.7466 | 
| 2006 | 12.8042 | 
| 2005 | 12.9494 | 
| 2004 | 13.172 | 
| 2003 | 13.4288 | 
| 2002 | 13.659 | 
| 2001 | 13.8551 | 
| 2000 | 14.0714 | 
| 1999 | 14.3525 | 
| 1998 | 14.7158 | 
| 1997 | 15.1733 | 
| 1996 | 15.7036 | 
| 1995 | 16.2177 | 
| 1994 | 16.5288 | 
| 1993 | 16.5882 | 
| 1992 | 16.4829 | 
| 1991 | 16.2331 | 
| 1990 | 15.9027 | 
| 1989 | 15.9275 | 
| 1988 | 16.1467 | 
| 1987 | 16.1411 | 
| 1986 | 16.1959 | 
| 1985 | 16.3686 | 
| 1984 | 16.6022 | 
| 1983 | 16.9245 | 
| 1982 | 17.3537 | 
| 1981 | 17.6769 | 
| 1980 | 17.8403 | 
| 1979 | 18.0268 | 
| 1978 | 18.0653 | 
| 1977 | 17.9886 | 
| 1976 | 17.95 | 
| 1975 | 17.8748 | 
| 1974 | 17.7949 | 
| 1973 | 17.6924 | 
| 1972 | 17.5819 | 
| 1971 | 17.4717 | 
| 1970 | 17.3603 | 
| 1969 | 17.2485 | 
| 1968 | 17.1324 | 
| 1967 | 17.0161 | 
| 1966 | 16.8942 | 
| 1965 | 16.7632 | 
| 1964 | 16.6364 | 
| 1963 | 16.5206 | 
| 1962 | 16.4243 | 
| 1961 | 16.3562 | 
| 1960 | 16.3161 |