| 年份 | 索马里 |
|---|---|
| 2023 | - |
| 2022 | 0.680702 |
| 2021 | 0.676601 |
| 2020 | 0.664576 |
| 2019 | 0.648035 |
| 2018 | 0.635982 |
| 2017 | 0.627151 |
| 2016 | 0.620219 |
| 2015 | 0.617256 |
| 2014 | 0.618509 |
| 2013 | 0.624855 |
| 2012 | 0.635082 |
| 2011 | 0.646762 |
| 2010 | 0.657369 |
| 2009 | 0.664811 |
| 2008 | 0.667467 |
| 2007 | 0.666667 |
| 2006 | 0.666297 |
| 2005 | 0.668916 |
| 2004 | 0.673879 |
| 2003 | 0.680585 |
| 2002 | 0.689218 |
| 2001 | 0.697969 |
| 2000 | 0.705517 |
| 1999 | 0.7123 |
| 1998 | 0.718068 |
| 1997 | 0.722646 |
| 1996 | 0.726896 |
| 1995 | 0.730865 |
| 1994 | 0.734949 |
| 1993 | 0.738734 |
| 1992 | 0.758293 |
| 1991 | 0.797923 |
| 1990 | 0.824372 |
| 1989 | 0.836429 |
| 1988 | 0.850917 |
| 1987 | 0.863539 |
| 1986 | 0.87184 |
| 1985 | 0.879031 |
| 1984 | 0.884885 |
| 1983 | 0.8892 |
| 1982 | 0.89231 |
| 1981 | 0.894899 |
| 1980 | 0.897575 |
| 1979 | 0.900037 |
| 1978 | 0.902457 |
| 1977 | 0.904984 |
| 1976 | 0.907383 |
| 1975 | 0.909787 |
| 1974 | 0.912074 |
| 1973 | 0.91263 |
| 1972 | 0.911073 |
| 1971 | 0.909112 |
| 1970 | 0.907341 |
| 1969 | 0.905731 |
| 1968 | 0.903921 |
| 1967 | 0.901596 |
| 1966 | 0.897454 |
| 1965 | 0.890644 |
| 1964 | 0.881056 |
| 1963 | 0.86804 |
| 1962 | 0.852261 |
| 1961 | 0.836094 |
| 1960 | 0.821033 |