| 年份 | 利比里亚 |
|---|---|
| 2023 | - |
| 2022 | 72.1437 |
| 2021 | 73.7018 |
| 2020 | 75.1457 |
| 2019 | 76.3725 |
| 2018 | 77.2853 |
| 2017 | 77.9924 |
| 2016 | 78.5379 |
| 2015 | 79.0656 |
| 2014 | 79.4362 |
| 2013 | 79.4541 |
| 2012 | 79.1381 |
| 2011 | 80.0842 |
| 2010 | 81.3937 |
| 2009 | 81.289 |
| 2008 | 81.1928 |
| 2007 | 80.9226 |
| 2006 | 80.2913 |
| 2005 | 79.6545 |
| 2004 | 79.0685 |
| 2003 | 78.5684 |
| 2002 | 78.1676 |
| 2001 | 77.8705 |
| 2000 | 77.6607 |
| 1999 | 77.4932 |
| 1998 | 77.5699 |
| 1997 | 77.8267 |
| 1996 | 78.1769 |
| 1995 | 78.7408 |
| 1994 | 79.5435 |
| 1993 | 80.4469 |
| 1992 | 81.3283 |
| 1991 | 82.1667 |
| 1990 | 82.8014 |
| 1989 | 83.4419 |
| 1988 | 84.3519 |
| 1987 | 85.1095 |
| 1986 | 85.6933 |
| 1985 | 86.1787 |
| 1984 | 86.6621 |
| 1983 | 86.6105 |
| 1982 | 86.1211 |
| 1981 | 85.6571 |
| 1980 | 84.9772 |
| 1979 | 84.1252 |
| 1978 | 83.1888 |
| 1977 | 82.2144 |
| 1976 | 81.2773 |
| 1975 | 80.3681 |
| 1974 | 79.6428 |
| 1973 | 79.1393 |
| 1972 | 78.6542 |
| 1971 | 78.1507 |
| 1970 | 77.6363 |
| 1969 | 77.0795 |
| 1968 | 76.4687 |
| 1967 | 75.8571 |
| 1966 | 75.208 |
| 1965 | 74.5209 |
| 1964 | 73.5424 |
| 1963 | 72.6016 |
| 1962 | 72.1029 |
| 1961 | 71.8441 |
| 1960 | 71.7969 |