| 年份 | 索马里 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0644572 |
| 2020 | 0.0665174 |
| 2019 | 0.0688304 |
| 2018 | 0.0713772 |
| 2017 | 0.0740032 |
| 2016 | 0.0769616 |
| 2015 | 0.0799192 |
| 2014 | 0.0826494 |
| 2013 | 0.0855866 |
| 2012 | 0.0803837 |
| 2011 | 0.0818542 |
| 2010 | 0.0914636 |
| 2009 | 0.0937763 |
| 2008 | 0.0961129 |
| 2007 | 0.0899435 |
| 2006 | 0.0973577 |
| 2005 | 0.105089 |
| 2004 | 0.111689 |
| 2003 | 0.110983 |
| 2002 | 0.113058 |
| 2001 | 0.115206 |
| 2000 | 0.11959 |
| 1999 | 0.124397 |
| 1998 | 0.129455 |
| 1997 | 0.134854 |
| 1996 | 0.139044 |
| 1995 | 0.143532 |
| 1994 | 0.147992 |
| 1993 | 0.154666 |
| 1992 | 0.159144 |
| 1991 | 0.151796 |
| 1990 | 0.146019 |
| 1989 | 0.145124 |
| 1988 | 0.142589 |
| 1987 | 0.142218 |
| 1986 | 0.146774 |
| 1985 | 0.152172 |
| 1984 | 0.157638 |
| 1983 | 0.162637 |
| 1982 | 0.167008 |
| 1981 | 0.16664 |
| 1980 | 0.167 |
| 1979 | 0.181001 |
| 1978 | 0.203864 |
| 1977 | 0.217777 |
| 1976 | 0.222669 |
| 1975 | 0.227042 |
| 1974 | 0.231469 |
| 1973 | 0.23643 |
| 1972 | 0.241436 |
| 1971 | 0.246439 |
| 1970 | 0.251547 |
| 1969 | 0.256808 |
| 1968 | 0.262143 |
| 1967 | 0.267593 |
| 1966 | 0.273134 |
| 1965 | 0.278798 |
| 1964 | 0.284584 |
| 1963 | 0.290442 |
| 1962 | 0.296411 |
| 1961 | 0.302479 |
| 1960 | - |