| 年份 | 伊朗伊斯兰共和国 |
|---|---|
| 2023 | - |
| 2022 | 8.41036 |
| 2021 | 8.03533 |
| 2020 | 7.66029 |
| 2019 | 7.32255 |
| 2018 | 7.05234 |
| 2017 | 6.84953 |
| 2016 | 6.7163 |
| 2015 | 6.57464 |
| 2014 | 6.38929 |
| 2013 | 6.28603 |
| 2012 | 6.25599 |
| 2011 | 6.20574 |
| 2010 | 6.13171 |
| 2009 | 6.04722 |
| 2008 | 5.96549 |
| 2007 | 5.89681 |
| 2006 | 5.83961 |
| 2005 | 5.79402 |
| 2004 | 5.76055 |
| 2003 | 5.72384 |
| 2002 | 5.66641 |
| 2001 | 5.58881 |
| 2000 | 5.49096 |
| 1999 | 5.37117 |
| 1998 | 5.24052 |
| 1997 | 5.11384 |
| 1996 | 4.99811 |
| 1995 | 4.89633 |
| 1994 | 4.80834 |
| 1993 | 4.69414 |
| 1992 | 4.541 |
| 1991 | 4.37505 |
| 1990 | 4.18603 |
| 1989 | 3.99046 |
| 1988 | 3.87178 |
| 1987 | 3.82228 |
| 1986 | 3.7957 |
| 1985 | 3.80393 |
| 1984 | 3.85097 |
| 1983 | 3.93721 |
| 1982 | 4.05301 |
| 1981 | 4.16466 |
| 1980 | 4.27461 |
| 1979 | 4.39107 |
| 1978 | 4.48861 |
| 1977 | 4.56259 |
| 1976 | 4.62264 |
| 1975 | 4.67294 |
| 1974 | 4.70857 |
| 1973 | 4.72279 |
| 1972 | 4.72677 |
| 1971 | 4.74391 |
| 1970 | 4.78663 |
| 1969 | 4.85312 |
| 1968 | 4.94646 |
| 1967 | 5.0494 |
| 1966 | 5.11351 |
| 1965 | 5.1068 |
| 1964 | 5.03401 |
| 1963 | 4.89409 |
| 1962 | 4.70042 |
| 1961 | 4.51167 |
| 1960 | 4.36906 |