| 年份 | 索马里 |
|---|---|
| 2023 | - |
| 2022 | 0.342966 |
| 2021 | 0.346339 |
| 2020 | 0.350674 |
| 2019 | 0.352717 |
| 2018 | 0.354272 |
| 2017 | 0.358164 |
| 2016 | 0.362862 |
| 2015 | 0.366894 |
| 2014 | 0.369554 |
| 2013 | 0.36991 |
| 2012 | 0.368119 |
| 2011 | 0.367057 |
| 2010 | 0.368416 |
| 2009 | 0.370705 |
| 2008 | 0.37358 |
| 2007 | 0.37781 |
| 2006 | 0.382234 |
| 2005 | 0.386005 |
| 2004 | 0.389406 |
| 2003 | 0.392273 |
| 2002 | 0.39433 |
| 2001 | 0.396099 |
| 2000 | 0.397886 |
| 1999 | 0.399686 |
| 1998 | 0.40139 |
| 1997 | 0.403091 |
| 1996 | 0.404374 |
| 1995 | 0.404783 |
| 1994 | 0.405066 |
| 1993 | 0.405631 |
| 1992 | 0.4205 |
| 1991 | 0.452655 |
| 1990 | 0.471724 |
| 1989 | 0.476447 |
| 1988 | 0.48211 |
| 1987 | 0.486067 |
| 1986 | 0.487218 |
| 1985 | 0.488523 |
| 1984 | 0.490039 |
| 1983 | 0.491871 |
| 1982 | 0.493818 |
| 1981 | 0.495284 |
| 1980 | 0.495978 |
| 1979 | 0.495969 |
| 1978 | 0.495369 |
| 1977 | 0.494102 |
| 1976 | 0.493313 |
| 1975 | 0.493614 |
| 1974 | 0.494172 |
| 1973 | 0.493494 |
| 1972 | 0.49118 |
| 1971 | 0.487792 |
| 1970 | 0.482962 |
| 1969 | 0.476645 |
| 1968 | 0.468465 |
| 1967 | 0.458781 |
| 1966 | 0.448802 |
| 1965 | 0.439443 |
| 1964 | 0.430741 |
| 1963 | 0.422728 |
| 1962 | 0.415454 |
| 1961 | 0.407889 |
| 1960 | 0.399111 |