| 年份 | 利比里亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | 0.0884099 |
| 2019 | 0.0899423 |
| 2018 | 0.0966377 |
| 2017 | 0.094053 |
| 2016 | 0.0984296 |
| 2015 | 0.100604 |
| 2014 | 0.102747 |
| 2013 | 0.104783 |
| 2012 | 0.10684 |
| 2011 | 0.11118 |
| 2010 | 0.115831 |
| 2009 | 0.11916 |
| 2008 | 0.12053 |
| 2007 | 0.12542 |
| 2006 | 0.131489 |
| 2005 | 1.04038 |
| 2004 | - |
| 2003 | 1.09599 |
| 2002 | 1.10274 |
| 2001 | 1.13077 |
| 2000 | 1.16414 |
| 1999 | 0.426284 |
| 1998 | 1.19065 |
| 1997 | 2.07481 |
| 1996 | 2.24748 |
| 1995 | 2.21295 |
| 1994 | - |
| 1993 | - |
| 1992 | 0.22259 |
| 1991 | 0.59119 |
| 1990 | 0.832629 |
| 1989 | - |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |