| 年份 | 伊朗伊斯兰共和国 |
|---|---|
| 2023 | - |
| 2022 | 2.58587 |
| 2021 | 2.19253 |
| 2020 | 1.9714 |
| 2019 | 2.00614 |
| 2018 | 2.24343 |
| 2017 | 2.84434 |
| 2016 | 2.79644 |
| 2015 | 2.55709 |
| 2014 | 2.11656 |
| 2013 | 2.18077 |
| 2012 | 2.68661 |
| 2011 | 2.38163 |
| 2010 | 2.78655 |
| 2009 | 3.04771 |
| 2008 | 2.68334 |
| 2007 | 2.65398 |
| 2006 | 3.31519 |
| 2005 | 3.03665 |
| 2004 | 2.83456 |
| 2003 | 2.40504 |
| 2002 | 2.17458 |
| 2001 | 2.41818 |
| 2000 | 2.29504 |
| 1999 | 2.40455 |
| 1998 | 2.62908 |
| 1997 | 2.49887 |
| 1996 | 2.24486 |
| 1995 | 2.15417 |
| 1994 | 2.07301 |
| 1993 | 1.70036 |
| 1992 | 1.78931 |
| 1991 | 2.16971 |
| 1990 | 2.94265 |
| 1989 | 4.55798 |
| 1988 | 6.26978 |
| 1987 | 5.88911 |
| 1986 | 6.07934 |
| 1985 | 6.51242 |
| 1984 | 6.35485 |
| 1983 | 7.09708 |
| 1982 | 7.90689 |
| 1981 | 8.19038 |
| 1980 | 5.34315 |
| 1979 | 5.79725 |
| 1978 | 11.1132 |
| 1977 | 10.1898 |
| 1976 | 11.248 |
| 1975 | 12.0692 |
| 1974 | 8.75035 |
| 1973 | 1.86471 |
| 1972 | 2.27537 |
| 1971 | 3.04701 |
| 1970 | 5.8569 |
| 1969 | 5.96905 |
| 1968 | 5.17636 |
| 1967 | 4.45799 |
| 1966 | 3.819 |
| 1965 | 3.24952 |
| 1964 | 2.88183 |
| 1963 | 2.59036 |
| 1962 | 2.30741 |
| 1961 | 2.34664 |
| 1960 | 2.29491 |