| 年份 | 利比里亚 |
|---|---|
| 2023 | - |
| 2022 | 5.88983 |
| 2021 | 6.00386 |
| 2020 | 6.11794 |
| 2019 | 6.19932 |
| 2018 | 6.25022 |
| 2017 | 6.29702 |
| 2016 | 6.342 |
| 2015 | 6.39367 |
| 2014 | 6.47276 |
| 2013 | 6.53808 |
| 2012 | 6.55197 |
| 2011 | 6.61349 |
| 2010 | 6.66915 |
| 2009 | 6.63168 |
| 2008 | 6.58528 |
| 2007 | 6.52608 |
| 2006 | 6.44431 |
| 2005 | 6.35244 |
| 2004 | 6.24983 |
| 2003 | 6.1473 |
| 2002 | 6.04795 |
| 2001 | 5.94589 |
| 2000 | 5.8457 |
| 1999 | 5.7482 |
| 1998 | 5.65928 |
| 1997 | 5.57572 |
| 1996 | 5.4992 |
| 1995 | 5.44213 |
| 1994 | 5.39993 |
| 1993 | 5.36867 |
| 1992 | 5.32341 |
| 1991 | 5.26922 |
| 1990 | 5.22514 |
| 1989 | 5.18955 |
| 1988 | 5.13476 |
| 1987 | 5.06998 |
| 1986 | 4.99831 |
| 1985 | 4.9273 |
| 1984 | 4.85461 |
| 1983 | 4.91324 |
| 1982 | 4.99136 |
| 1981 | 4.96716 |
| 1980 | 4.98489 |
| 1979 | 5.03975 |
| 1978 | 5.1235 |
| 1977 | 5.22971 |
| 1976 | 5.35623 |
| 1975 | 5.50595 |
| 1974 | 5.57082 |
| 1973 | 5.53619 |
| 1972 | 5.50397 |
| 1971 | 5.46901 |
| 1970 | 5.43525 |
| 1969 | 5.40538 |
| 1968 | 5.37541 |
| 1967 | 5.34473 |
| 1966 | 5.31105 |
| 1965 | 5.27395 |
| 1964 | 5.2243 |
| 1963 | 5.16842 |
| 1962 | 5.14074 |
| 1961 | 5.13886 |
| 1960 | 5.14184 |