| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 35.3 |
| 2020 | 36.4 |
| 2019 | 38 |
| 2018 | 39.5 |
| 2017 | 40.2 |
| 2016 | 41.3 |
| 2015 | 41.9 |
| 2014 | 41.4 |
| 2013 | 43.7 |
| 2012 | 45.8 |
| 2011 | 44.7 |
| 2010 | 44.9 |
| 2009 | 47.4 |
| 2008 | 50.7 |
| 2007 | 56.3 |
| 2006 | 60.5 |
| 2005 | 65.4 |
| 2004 | 68.5 |
| 2003 | 68.7 |
| 2002 | 69.4 |
| 2001 | 70.6 |
| 2000 | 71.6 |
| 1999 | 72 |
| 1998 | 71.6 |
| 1997 | 70.4 |
| 1996 | 68.5 |
| 1995 | 66.5 |
| 1994 | 65 |
| 1993 | 64.4 |
| 1992 | 64.8 |
| 1991 | 65.8 |
| 1990 | 67.6 |
| 1989 | 69.8 |
| 1988 | 72.2 |
| 1987 | 75.2 |
| 1986 | 78.4 |
| 1985 | 81.9 |
| 1984 | 85.5 |
| 1983 | 88.8 |
| 1982 | 91.7 |
| 1981 | 93.8 |
| 1980 | 95.2 |
| 1979 | 96 |
| 1978 | 96.1 |
| 1977 | 95.6 |
| 1976 | 94.9 |
| 1975 | 94.1 |
| 1974 | 93.3 |
| 1973 | 92.7 |
| 1972 | 92 |
| 1971 | 91.4 |
| 1970 | 90.8 |
| 1969 | 90.4 |
| 1968 | 90.1 |
| 1967 | 89.6 |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |