| 年份 | 伊朗伊斯兰共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.810042 |
| 2021 | 0.809806 |
| 2020 | 0.79754 |
| 2019 | 0.767094 |
| 2018 | 0.737084 |
| 2017 | 0.70727 |
| 2016 | 0.678783 |
| 2015 | 0.654783 |
| 2014 | 0.634878 |
| 2013 | 0.612996 |
| 2012 | 0.589357 |
| 2011 | 0.566609 |
| 2010 | 0.546132 |
| 2009 | 0.528775 |
| 2008 | 0.510841 |
| 2007 | 0.492418 |
| 2006 | 0.475005 |
| 2005 | 0.457338 |
| 2004 | 0.439145 |
| 2003 | 0.420248 |
| 2002 | 0.397864 |
| 2001 | 0.377087 |
| 2000 | 0.362966 |
| 1999 | 0.352 |
| 1998 | 0.34412 |
| 1997 | 0.340274 |
| 1996 | 0.3366 |
| 1995 | 0.332156 |
| 1994 | 0.328894 |
| 1993 | 0.322728 |
| 1992 | 0.316198 |
| 1991 | 0.313628 |
| 1990 | 0.315659 |
| 1989 | 0.31817 |
| 1988 | 0.317404 |
| 1987 | 0.316789 |
| 1986 | 0.315992 |
| 1985 | 0.314846 |
| 1984 | 0.313084 |
| 1983 | 0.310384 |
| 1982 | 0.306964 |
| 1981 | 0.30938 |
| 1980 | 0.314896 |
| 1979 | 0.317884 |
| 1978 | 0.323947 |
| 1977 | 0.332782 |
| 1976 | 0.342527 |
| 1975 | 0.353091 |
| 1974 | 0.365323 |
| 1973 | 0.379367 |
| 1972 | 0.394463 |
| 1971 | 0.409418 |
| 1970 | 0.423422 |
| 1969 | 0.435584 |
| 1968 | 0.444481 |
| 1967 | 0.450147 |
| 1966 | 0.455204 |
| 1965 | 0.461742 |
| 1964 | 0.469388 |
| 1963 | 0.478149 |
| 1962 | 0.48868 |
| 1961 | 0.499064 |
| 1960 | 0.507529 |