| 年份 | 索马里 |
|---|---|
| 2023 | - |
| 2022 | 2.52632 |
| 2021 | 2.53999 |
| 2020 | 2.55432 |
| 2019 | 2.56799 |
| 2018 | 2.58144 |
| 2017 | 2.59646 |
| 2016 | 2.61301 |
| 2015 | 2.63107 |
| 2014 | 2.6504 |
| 2013 | 2.67082 |
| 2012 | 2.69209 |
| 2011 | 2.71409 |
| 2010 | 2.73625 |
| 2009 | 2.75973 |
| 2008 | 2.78495 |
| 2007 | 2.81146 |
| 2006 | 2.84024 |
| 2005 | 2.8708 |
| 2004 | 2.87856 |
| 2003 | 2.85175 |
| 2002 | 2.80894 |
| 2001 | 2.75209 |
| 2000 | 2.67821 |
| 1999 | 2.61955 |
| 1998 | 2.59399 |
| 1997 | 2.58014 |
| 1996 | 2.57684 |
| 1995 | 2.5894 |
| 1994 | 2.61901 |
| 1993 | 2.66732 |
| 1992 | 2.71994 |
| 1991 | 2.75444 |
| 1990 | 2.77934 |
| 1989 | 2.79413 |
| 1988 | 2.7808 |
| 1987 | 2.74967 |
| 1986 | 2.72648 |
| 1985 | 2.72415 |
| 1984 | 2.73934 |
| 1983 | 2.77102 |
| 1982 | 2.8167 |
| 1981 | 2.86514 |
| 1980 | 2.90689 |
| 1979 | 2.94276 |
| 1978 | 2.97602 |
| 1977 | 3.00697 |
| 1976 | 3.03579 |
| 1975 | 3.06418 |
| 1974 | 3.09141 |
| 1973 | 3.11748 |
| 1972 | 3.14321 |
| 1971 | 3.16834 |
| 1970 | 3.19304 |
| 1969 | 3.21718 |
| 1968 | 3.24093 |
| 1967 | 3.26415 |
| 1966 | 3.28653 |
| 1965 | 3.30782 |
| 1964 | 3.32802 |
| 1963 | 3.34727 |
| 1962 | 3.36574 |
| 1961 | 3.38373 |
| 1960 | 3.40178 |