| 年份 | 利比里亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 69.9 |
| 2020 | 72.1 |
| 2019 | 74.2 |
| 2018 | 76.2 |
| 2017 | 78 |
| 2016 | 79.8 |
| 2015 | 81.7 |
| 2014 | 85.4 |
| 2013 | 85.2 |
| 2012 | 87.4 |
| 2011 | 89.9 |
| 2010 | 92.8 |
| 2009 | 96.3 |
| 2008 | 100.7 |
| 2007 | 106.1 |
| 2006 | 112.8 |
| 2005 | 120.9 |
| 2004 | 130.4 |
| 2003 | 141.3 |
| 2002 | 153.2 |
| 2001 | 165.6 |
| 2000 | 178.2 |
| 1999 | 190.5 |
| 1998 | 202.5 |
| 1997 | 213.5 |
| 1996 | 223.8 |
| 1995 | 233.2 |
| 1994 | 241.2 |
| 1993 | 247 |
| 1992 | 250.4 |
| 1991 | 250.9 |
| 1990 | 248.8 |
| 1989 | 244.7 |
| 1988 | 239.4 |
| 1987 | 233.8 |
| 1986 | 228.9 |
| 1985 | 225.4 |
| 1984 | 223.5 |
| 1983 | 223.3 |
| 1982 | 224.4 |
| 1981 | 226.5 |
| 1980 | 229.1 |
| 1979 | 232.3 |
| 1978 | 236 |
| 1977 | 239.6 |
| 1976 | 243.6 |
| 1975 | 247.8 |
| 1974 | 252.3 |
| 1973 | 256.9 |
| 1972 | 261.3 |
| 1971 | 265.9 |
| 1970 | 270.5 |
| 1969 | 275.4 |
| 1968 | 279.9 |
| 1967 | 284.3 |
| 1966 | 287.8 |
| 1965 | 290.9 |
| 1964 | 293.2 |
| 1963 | 294.8 |
| 1962 | 295.9 |
| 1961 | 296.1 |
| 1960 | 295.7 |