| 年份 | 利比里亚 |
|---|---|
| 2023 | - |
| 2022 | 0.789639 |
| 2021 | 0.80513 |
| 2020 | 0.829425 |
| 2019 | 0.865074 |
| 2018 | 0.898796 |
| 2017 | 0.920114 |
| 2016 | 0.935495 |
| 2015 | 0.94585 |
| 2014 | 0.952946 |
| 2013 | 0.95721 |
| 2012 | 0.960033 |
| 2011 | 0.966674 |
| 2010 | 0.972834 |
| 2009 | 0.972713 |
| 2008 | 0.972393 |
| 2007 | 0.971929 |
| 2006 | 0.969454 |
| 2005 | 0.964652 |
| 2004 | 0.957177 |
| 2003 | 0.947784 |
| 2002 | 0.936496 |
| 2001 | 0.923964 |
| 2000 | 0.912268 |
| 1999 | 0.901803 |
| 1998 | 0.893012 |
| 1997 | 0.885563 |
| 1996 | 0.87976 |
| 1995 | 0.875245 |
| 1994 | 0.872061 |
| 1993 | 0.869053 |
| 1992 | 0.862144 |
| 1991 | 0.85377 |
| 1990 | 0.851508 |
| 1989 | 0.849877 |
| 1988 | 0.843817 |
| 1987 | 0.83722 |
| 1986 | 0.828727 |
| 1985 | 0.818357 |
| 1984 | 0.805107 |
| 1983 | 0.813666 |
| 1982 | 0.824325 |
| 1981 | 0.816231 |
| 1980 | 0.816992 |
| 1979 | 0.825963 |
| 1978 | 0.842133 |
| 1977 | 0.864053 |
| 1976 | 0.889177 |
| 1975 | 0.916518 |
| 1974 | 0.928049 |
| 1973 | 0.921488 |
| 1972 | 0.91388 |
| 1971 | 0.905902 |
| 1970 | 0.899479 |
| 1969 | 0.894773 |
| 1968 | 0.891195 |
| 1967 | 0.888347 |
| 1966 | 0.884784 |
| 1965 | 0.879731 |
| 1964 | 0.873348 |
| 1963 | 0.865398 |
| 1962 | 0.858238 |
| 1961 | 0.853597 |
| 1960 | 0.850449 |