| 年份 | 利比里亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 51.1 |
| 2020 | 52.5 |
| 2019 | 53.8 |
| 2018 | 55 |
| 2017 | 56.1 |
| 2016 | 57.2 |
| 2015 | 58.5 |
| 2014 | 61.5 |
| 2013 | 60.5 |
| 2012 | 61.9 |
| 2011 | 63.4 |
| 2010 | 65.3 |
| 2009 | 67.4 |
| 2008 | 70.1 |
| 2007 | 73.4 |
| 2006 | 77.5 |
| 2005 | 82.4 |
| 2004 | 88.3 |
| 2003 | 95 |
| 2002 | 102.2 |
| 2001 | 109.5 |
| 2000 | 117.3 |
| 1999 | 124.9 |
| 1998 | 132.4 |
| 1997 | 139 |
| 1996 | 145.5 |
| 1995 | 151.8 |
| 1994 | 156.9 |
| 1993 | 160.8 |
| 1992 | 162.9 |
| 1991 | 163.3 |
| 1990 | 161.9 |
| 1989 | 159.3 |
| 1988 | 155.6 |
| 1987 | 151.9 |
| 1986 | 148.5 |
| 1985 | 146 |
| 1984 | 144.7 |
| 1983 | 144.5 |
| 1982 | 145.1 |
| 1981 | 146.4 |
| 1980 | 148 |
| 1979 | 150.1 |
| 1978 | 152.4 |
| 1977 | 154.8 |
| 1976 | 157.4 |
| 1975 | 160.2 |
| 1974 | 163.1 |
| 1973 | 166.1 |
| 1972 | 168.9 |
| 1971 | 171.8 |
| 1970 | 175 |
| 1969 | 178.2 |
| 1968 | 181.4 |
| 1967 | 184.2 |
| 1966 | 186.5 |
| 1965 | 188.5 |
| 1964 | 190.2 |
| 1963 | 191.5 |
| 1962 | 192.3 |
| 1961 | 192.6 |
| 1960 | 192.4 |