| 年份 | 伊朗伊斯兰共和国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 1.692 |
| 2020 | 1.708 |
| 2019 | 1.77 |
| 2018 | 1.968 |
| 2017 | 2.074 |
| 2016 | 2.07 |
| 2015 | 2.053 |
| 2014 | 2.036 |
| 2013 | 1.961 |
| 2012 | 1.886 |
| 2011 | 1.8 |
| 2010 | 1.768 |
| 2009 | 1.766 |
| 2008 | 1.767 |
| 2007 | 1.768 |
| 2006 | 1.771 |
| 2005 | 1.775 |
| 2004 | 1.796 |
| 2003 | 1.824 |
| 2002 | 1.865 |
| 2001 | 1.94 |
| 2000 | 2.016 |
| 1999 | 2.099 |
| 1998 | 2.197 |
| 1997 | 2.333 |
| 1996 | 2.566 |
| 1995 | 2.885 |
| 1994 | 3.271 |
| 1993 | 3.683 |
| 1992 | 4.082 |
| 1991 | 4.506 |
| 1990 | 4.863 |
| 1989 | 5.108 |
| 1988 | 5.387 |
| 1987 | 5.69 |
| 1986 | 6.012 |
| 1985 | 6.264 |
| 1984 | 6.436 |
| 1983 | 6.511 |
| 1982 | 6.554 |
| 1981 | 6.558 |
| 1980 | 6.584 |
| 1979 | 6.531 |
| 1978 | 6.332 |
| 1977 | 6.203 |
| 1976 | 6.136 |
| 1975 | 6.008 |
| 1974 | 6.042 |
| 1973 | 6.106 |
| 1972 | 6.25 |
| 1971 | 6.51 |
| 1970 | 6.707 |
| 1969 | 6.899 |
| 1968 | 6.974 |
| 1967 | 7.051 |
| 1966 | 7.075 |
| 1965 | 7.106 |
| 1964 | 7.131 |
| 1963 | 7.181 |
| 1962 | 7.224 |
| 1961 | 7.227 |
| 1960 | 7.301 |