| 年份 | 伊朗伊斯兰共和国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 6.437 |
| 2020 | 5.567 |
| 2019 | 4.872 |
| 2018 | 4.715 |
| 2017 | 4.692 |
| 2016 | 4.726 |
| 2015 | 4.842 |
| 2014 | 4.905 |
| 2013 | 4.911 |
| 2012 | 4.892 |
| 2011 | 4.978 |
| 2010 | 5.108 |
| 2009 | 5.127 |
| 2008 | 5.041 |
| 2007 | 4.838 |
| 2006 | 4.911 |
| 2005 | 4.97 |
| 2004 | 5.007 |
| 2003 | 5.459 |
| 2002 | 5.1 |
| 2001 | 5.168 |
| 2000 | 5.15 |
| 1999 | 5.18 |
| 1998 | 5.311 |
| 1997 | 5.357 |
| 1996 | 5.415 |
| 1995 | 5.514 |
| 1994 | 5.661 |
| 1993 | 5.821 |
| 1992 | 6.015 |
| 1991 | 6.207 |
| 1990 | 7.176 |
| 1989 | 6.686 |
| 1988 | 7.668 |
| 1987 | 8.071 |
| 1986 | 8.373 |
| 1985 | 8.78 |
| 1984 | 9.219 |
| 1983 | 10.42 |
| 1982 | 10.995 |
| 1981 | 11.621 |
| 1980 | 10.95 |
| 1979 | 11.047 |
| 1978 | 12.398 |
| 1977 | 12.072 |
| 1976 | 12.537 |
| 1975 | 13.039 |
| 1974 | 13.594 |
| 1973 | 14.214 |
| 1972 | 15.147 |
| 1971 | 15.706 |
| 1970 | 16.478 |
| 1969 | 17.154 |
| 1968 | 18.141 |
| 1967 | 18.373 |
| 1966 | 18.938 |
| 1965 | 19.593 |
| 1964 | 20.209 |
| 1963 | 20.887 |
| 1962 | 22.157 |
| 1961 | 22.268 |
| 1960 | 23.053 |