| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 13.479 |
| 2021 | 13.6362 |
| 2020 | 13.8108 |
| 2019 | 13.9962 |
| 2018 | 14.1673 |
| 2017 | 14.3074 |
| 2016 | 14.4009 |
| 2015 | 14.4327 |
| 2014 | 14.4076 |
| 2013 | 14.327 |
| 2012 | 14.1898 |
| 2011 | 14.0136 |
| 2010 | 13.8371 |
| 2009 | 13.6817 |
| 2008 | 13.5655 |
| 2007 | 13.522 |
| 2006 | 13.5756 |
| 2005 | 13.7309 |
| 2004 | 13.9738 |
| 2003 | 14.2531 |
| 2002 | 14.4961 |
| 2001 | 14.6913 |
| 2000 | 14.9032 |
| 1999 | 15.1826 |
| 1998 | 15.5503 |
| 1997 | 16.0182 |
| 1996 | 16.565 |
| 1995 | 17.102 |
| 1994 | 17.4338 |
| 1993 | 17.5086 |
| 1992 | 17.4165 |
| 1991 | 17.1784 |
| 1990 | 16.8534 |
| 1989 | 16.9237 |
| 1988 | 17.1962 |
| 1987 | 17.1893 |
| 1986 | 17.2397 |
| 1985 | 17.411 |
| 1984 | 17.6447 |
| 1983 | 17.9706 |
| 1982 | 18.4076 |
| 1981 | 18.721 |
| 1980 | 18.8572 |
| 1979 | 19.0394 |
| 1978 | 19.0761 |
| 1977 | 18.9925 |
| 1976 | 18.9608 |
| 1975 | 18.8939 |
| 1974 | 18.8264 |
| 1973 | 18.7375 |
| 1972 | 18.6418 |
| 1971 | 18.5465 |
| 1970 | 18.4483 |
| 1969 | 18.3479 |
| 1968 | 18.2407 |
| 1967 | 18.1307 |
| 1966 | 18.0116 |
| 1965 | 17.8802 |
| 1964 | 17.7382 |
| 1963 | 17.5873 |
| 1962 | 17.4455 |
| 1961 | 17.3215 |
| 1960 | 17.2156 |