| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | 2.43638 |
| 2021 | 2.41875 |
| 2020 | 2.39584 |
| 2019 | 2.36559 |
| 2018 | 2.33156 |
| 2017 | 2.30346 |
| 2016 | 2.28047 |
| 2015 | 2.26183 |
| 2014 | 2.24423 |
| 2013 | 2.21933 |
| 2012 | 2.18692 |
| 2011 | 2.1531 |
| 2010 | 2.11624 |
| 2009 | 2.07524 |
| 2008 | 2.03667 |
| 2007 | 1.99904 |
| 2006 | 1.95485 |
| 2005 | 1.90837 |
| 2004 | 1.86627 |
| 2003 | 1.83182 |
| 2002 | 1.81606 |
| 2001 | 1.81521 |
| 2000 | 1.80774 |
| 1999 | 1.79187 |
| 1998 | 1.77556 |
| 1997 | 1.76106 |
| 1996 | 1.74935 |
| 1995 | 1.74331 |
| 1994 | 1.74527 |
| 1993 | 1.75679 |
| 1992 | 1.78399 |
| 1991 | 1.82735 |
| 1990 | 1.87104 |
| 1989 | 1.92825 |
| 1988 | 1.97719 |
| 1987 | 1.98907 |
| 1986 | 2.00076 |
| 1985 | 2.02341 |
| 1984 | 2.05463 |
| 1983 | 2.09371 |
| 1982 | 2.14013 |
| 1981 | 2.17426 |
| 1980 | 2.1911 |
| 1979 | 2.2097 |
| 1978 | 2.21922 |
| 1977 | 2.22363 |
| 1976 | 2.23754 |
| 1975 | 2.2538 |
| 1974 | 2.27091 |
| 1973 | 2.28432 |
| 1972 | 2.29748 |
| 1971 | 2.31595 |
| 1970 | 2.34206 |
| 1969 | 2.37688 |
| 1968 | 2.42166 |
| 1967 | 2.47127 |
| 1966 | 2.51294 |
| 1965 | 2.53768 |
| 1964 | 2.54721 |
| 1963 | 2.54207 |
| 1962 | 2.52279 |
| 1961 | 2.49919 |
| 1960 | 2.47933 |