| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 5.08491 |
| 2021 | 5.09991 |
| 2020 | 5.10091 |
| 2019 | 5.10082 |
| 2018 | 5.09052 |
| 2017 | 5.06769 |
| 2016 | 5.04962 |
| 2015 | 5.03999 |
| 2014 | 5.04126 |
| 2013 | 5.04969 |
| 2012 | 5.05913 |
| 2011 | 5.06274 |
| 2010 | 5.05397 |
| 2009 | 5.02566 |
| 2008 | 4.97493 |
| 2007 | 4.90428 |
| 2006 | 4.81537 |
| 2005 | 4.7138 |
| 2004 | 4.60659 |
| 2003 | 4.50131 |
| 2002 | 4.40827 |
| 2001 | 4.33494 |
| 2000 | 4.28212 |
| 1999 | 4.24664 |
| 1998 | 4.22499 |
| 1997 | 4.2115 |
| 1996 | 4.20389 |
| 1995 | 4.20232 |
| 1994 | 4.20372 |
| 1993 | 4.19051 |
| 1992 | 4.16127 |
| 1991 | 4.13197 |
| 1990 | 4.09773 |
| 1989 | 4.01293 |
| 1988 | 3.93261 |
| 1987 | 3.90921 |
| 1986 | 3.87297 |
| 1985 | 3.82433 |
| 1984 | 3.77362 |
| 1983 | 3.72439 |
| 1982 | 3.67979 |
| 1981 | 3.66196 |
| 1980 | 3.66789 |
| 1979 | 3.66835 |
| 1978 | 3.6894 |
| 1977 | 3.72586 |
| 1976 | 3.76232 |
| 1975 | 3.81683 |
| 1974 | 3.89045 |
| 1973 | 3.9902 |
| 1972 | 4.10427 |
| 1971 | 4.2113 |
| 1970 | 4.29715 |
| 1969 | 4.35794 |
| 1968 | 4.38933 |
| 1967 | 4.39929 |
| 1966 | 4.41623 |
| 1965 | 4.45853 |
| 1964 | 4.52225 |
| 1963 | 4.60478 |
| 1962 | 4.70273 |
| 1961 | 4.79387 |
| 1960 | 4.86349 |