| 年份 | 利比里亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 5.13428 | 
| 2021 | 5.14459 | 
| 2020 | 5.13507 | 
| 2019 | 5.10099 | 
| 2018 | 5.04486 | 
| 2017 | 4.97599 | 
| 2016 | 4.89891 | 
| 2015 | 4.81515 | 
| 2014 | 4.73906 | 
| 2013 | 4.67321 | 
| 2012 | 4.60283 | 
| 2011 | 4.51549 | 
| 2010 | 4.41782 | 
| 2009 | 4.32401 | 
| 2008 | 4.22777 | 
| 2007 | 4.14492 | 
| 2006 | 4.07968 | 
| 2005 | 4.02951 | 
| 2004 | 3.99916 | 
| 2003 | 3.99364 | 
| 2002 | 4.00837 | 
| 2001 | 4.03958 | 
| 2000 | 4.0864 | 
| 1999 | 4.14402 | 
| 1998 | 4.20908 | 
| 1997 | 4.27668 | 
| 1996 | 4.34703 | 
| 1995 | 4.42208 | 
| 1994 | 4.44209 | 
| 1993 | 4.43766 | 
| 1992 | 4.49364 | 
| 1991 | 4.58285 | 
| 1990 | 4.69416 | 
| 1989 | 4.83491 | 
| 1988 | 4.99617 | 
| 1987 | 5.09706 | 
| 1986 | 5.16034 | 
| 1985 | 5.19681 | 
| 1984 | 5.21339 | 
| 1983 | 5.15768 | 
| 1982 | 5.07674 | 
| 1981 | 5.02769 | 
| 1980 | 4.95539 | 
| 1979 | 4.86729 | 
| 1978 | 4.77399 | 
| 1977 | 4.67874 | 
| 1976 | 4.60016 | 
| 1975 | 4.53718 | 
| 1974 | 4.51199 | 
| 1973 | 4.53224 | 
| 1972 | 4.55822 | 
| 1971 | 4.58027 | 
| 1970 | 4.60514 | 
| 1969 | 4.6369 | 
| 1968 | 4.66772 | 
| 1967 | 4.69611 | 
| 1966 | 4.71397 | 
| 1965 | 4.72 | 
| 1964 | 4.71353 | 
| 1963 | 4.68691 | 
| 1962 | 4.63113 | 
| 1961 | 4.56266 | 
| 1960 | 4.50816 |