| 年份 | 纳米比亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 39 |
| 2020 | 40.3 |
| 2019 | 41.9 |
| 2018 | 43.6 |
| 2017 | 44.4 |
| 2016 | 45.5 |
| 2015 | 46.2 |
| 2014 | 45.5 |
| 2013 | 48.1 |
| 2012 | 50.3 |
| 2011 | 49.2 |
| 2010 | 49.4 |
| 2009 | 52.1 |
| 2008 | 55.4 |
| 2007 | 61 |
| 2006 | 65.3 |
| 2005 | 70.3 |
| 2004 | 73.8 |
| 2003 | 74 |
| 2002 | 74.8 |
| 2001 | 76 |
| 2000 | 77 |
| 1999 | 77.5 |
| 1998 | 77.2 |
| 1997 | 75.9 |
| 1996 | 73.9 |
| 1995 | 71.7 |
| 1994 | 70.2 |
| 1993 | 69.6 |
| 1992 | 69.9 |
| 1991 | 71 |
| 1990 | 72.8 |
| 1989 | 75 |
| 1988 | 77.6 |
| 1987 | 80.6 |
| 1986 | 83.9 |
| 1985 | 87.5 |
| 1984 | 91.2 |
| 1983 | 94.6 |
| 1982 | 97.5 |
| 1981 | 99.7 |
| 1980 | 101.3 |
| 1979 | 102 |
| 1978 | 101.9 |
| 1977 | 101.4 |
| 1976 | 100.7 |
| 1975 | 99.8 |
| 1974 | 99 |
| 1973 | 98.2 |
| 1972 | 97.6 |
| 1971 | 97 |
| 1970 | 96.4 |
| 1969 | 95.9 |
| 1968 | 95.5 |
| 1967 | 95.2 |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |