| 年份 | 纳米比亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 2.67608 | 
| 2021 | 2.64362 | 
| 2020 | 2.58913 | 
| 2019 | 2.51473 | 
| 2018 | 2.43209 | 
| 2017 | 2.35712 | 
| 2016 | 2.29282 | 
| 2015 | 2.23981 | 
| 2014 | 2.19779 | 
| 2013 | 2.16596 | 
| 2012 | 2.14225 | 
| 2011 | 2.12495 | 
| 2010 | 2.11244 | 
| 2009 | 2.10038 | 
| 2008 | 2.08508 | 
| 2007 | 2.0721 | 
| 2006 | 2.06437 | 
| 2005 | 2.05678 | 
| 2004 | 2.0495 | 
| 2003 | 2.04349 | 
| 2002 | 2.03873 | 
| 2001 | 2.03076 | 
| 2000 | 2.01152 | 
| 1999 | 1.9817 | 
| 1998 | 1.94541 | 
| 1997 | 1.90447 | 
| 1996 | 1.86122 | 
| 1995 | 1.81821 | 
| 1994 | 1.77728 | 
| 1993 | 1.73998 | 
| 1992 | 1.71425 | 
| 1991 | 1.70715 | 
| 1990 | 1.71672 | 
| 1989 | 1.73855 | 
| 1988 | 1.7798 | 
| 1987 | 1.83877 | 
| 1986 | 1.9008 | 
| 1985 | 1.95783 | 
| 1984 | 2.00753 | 
| 1983 | 2.04676 | 
| 1982 | 2.07481 | 
| 1981 | 2.09879 | 
| 1980 | 2.12584 | 
| 1979 | 2.1549 | 
| 1978 | 2.18032 | 
| 1977 | 2.20687 | 
| 1976 | 2.23754 | 
| 1975 | 2.26849 | 
| 1974 | 2.30097 | 
| 1973 | 2.3355 | 
| 1972 | 2.37155 | 
| 1971 | 2.4066 | 
| 1970 | 2.43912 | 
| 1969 | 2.47006 | 
| 1968 | 2.49928 | 
| 1967 | 2.52883 | 
| 1966 | 2.56261 | 
| 1965 | 2.60234 | 
| 1964 | 2.64934 | 
| 1963 | 2.70414 | 
| 1962 | 2.76178 | 
| 1961 | 2.81244 | 
| 1960 | 2.8499 |