| 年份 | 索马里 |
|---|---|
| 2023 | - |
| 2022 | 18.3705 |
| 2021 | 18.4988 |
| 2020 | 18.6339 |
| 2019 | 18.7588 |
| 2018 | 18.8701 |
| 2017 | 18.9675 |
| 2016 | 19.0359 |
| 2015 | 19.0651 |
| 2014 | 19.0748 |
| 2013 | 19.0901 |
| 2012 | 19.1146 |
| 2011 | 19.1644 |
| 2010 | 19.245 |
| 2009 | 19.318 |
| 2008 | 19.3792 |
| 2007 | 19.4496 |
| 2006 | 19.52 |
| 2005 | 19.5814 |
| 2004 | 19.6367 |
| 2003 | 19.684 |
| 2002 | 19.7217 |
| 2001 | 19.7415 |
| 2000 | 19.7472 |
| 1999 | 19.7508 |
| 1998 | 19.7493 |
| 1997 | 19.5986 |
| 1996 | 19.1248 |
| 1995 | 18.5053 |
| 1994 | 18.0091 |
| 1993 | 17.6755 |
| 1992 | 17.9156 |
| 1991 | 18.8017 |
| 1990 | 19.2513 |
| 1989 | 19.1945 |
| 1988 | 19.1327 |
| 1987 | 19.0634 |
| 1986 | 18.9707 |
| 1985 | 18.8627 |
| 1984 | 18.7405 |
| 1983 | 18.6082 |
| 1982 | 18.4498 |
| 1981 | 18.2542 |
| 1980 | 18.054 |
| 1979 | 17.8647 |
| 1978 | 17.6859 |
| 1977 | 17.5499 |
| 1976 | 17.4997 |
| 1975 | 17.5109 |
| 1974 | 17.5494 |
| 1973 | 17.5682 |
| 1972 | 17.5565 |
| 1971 | 17.554 |
| 1970 | 17.5608 |
| 1969 | 17.5747 |
| 1968 | 17.594 |
| 1967 | 17.6191 |
| 1966 | 17.6491 |
| 1965 | 17.6832 |
| 1964 | 17.724 |
| 1963 | 17.7719 |
| 1962 | 17.8253 |
| 1961 | 17.8863 |
| 1960 | 17.9548 |