| 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 |