| 年份 | 索马里 |
|---|---|
| 2023 | - |
| 2022 | 2.57001 |
| 2021 | 2.59659 |
| 2020 | 2.61584 |
| 2019 | 2.60793 |
| 2018 | 2.57991 |
| 2017 | 2.55055 |
| 2016 | 2.52008 |
| 2015 | 2.4851 |
| 2014 | 2.45873 |
| 2013 | 2.45067 |
| 2012 | 2.44949 |
| 2011 | 2.45451 |
| 2010 | 2.46769 |
| 2009 | 2.48414 |
| 2008 | 2.50282 |
| 2007 | 2.52421 |
| 2006 | 2.546 |
| 2005 | 2.56614 |
| 2004 | 2.58353 |
| 2003 | 2.59475 |
| 2002 | 2.60076 |
| 2001 | 2.60803 |
| 2000 | 2.62061 |
| 1999 | 2.63813 |
| 1998 | 2.65966 |
| 1997 | 2.68547 |
| 1996 | 2.71146 |
| 1995 | 2.73377 |
| 1994 | 2.75544 |
| 1993 | 2.77491 |
| 1992 | 2.84221 |
| 1991 | 2.96949 |
| 1990 | 3.05186 |
| 1989 | 3.0873 |
| 1988 | 3.12996 |
| 1987 | 3.16854 |
| 1986 | 3.19632 |
| 1985 | 3.22348 |
| 1984 | 3.2495 |
| 1983 | 3.2742 |
| 1982 | 3.29709 |
| 1981 | 3.31744 |
| 1980 | 3.33439 |
| 1979 | 3.34705 |
| 1978 | 3.35629 |
| 1977 | 3.36267 |
| 1976 | 3.36787 |
| 1975 | 3.37478 |
| 1974 | 3.38226 |
| 1973 | 3.38477 |
| 1972 | 3.38147 |
| 1971 | 3.3756 |
| 1970 | 3.368 |
| 1969 | 3.3593 |
| 1968 | 3.34843 |
| 1967 | 3.3356 |
| 1966 | 3.32058 |
| 1965 | 3.30359 |
| 1964 | 3.28428 |
| 1963 | 3.26136 |
| 1962 | 3.2349 |
| 1961 | 3.20476 |
| 1960 | 3.16992 |