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Legislative constraints on the executive index in Iran

Iran: Legislative constraints on the executive index was 0.523 in 2025. ▲ Rising

Latest (2025)
0.523
Change on year
up 54.3%
World rank
97th
of 174 countries
All-time high
0.802
in 1997
All-time low
0.103
in 1926
Years of data
112
1906–2025

Legislative constraints on the executive index in Iran, 1906–2025

0.20.40.60.8190619652025

Source: Our World in Data.

Analysis

In 2025, legislative constraints on the executive index in Iran stood at 0.523.

That represents a change of up 54.3% on the previous year and down 25.7% over ten years.

Over the whole period, legislative constraints on the executive index in Iran peaked at 0.802 in 1997 and was at its lowest, 0.103, in 1926.

Iran ranks 97th of 174 countries on this measure, in the middle of the range.

The long-run direction has been consistently rising across the 112 years of available data.

Legislative constraints on the executive index in Iran, year by year

Year Value Change
1906 0.44 —
1907 0.426 -3.2%
1908 0.425 -0.2%
1909 0.415 -2.4%
1910 0.415 +0.0%
1911 0.436 +5.1%
1914 0.425 -2.5%
1915 0.425 +0.0%
1922 0.325 -23.5%
1923 0.325 +0.0%
1924 0.29 -10.8%
1925 0.123 -57.6%
1926 0.103 -16.3%
1927 0.103 +0.0%
1928 0.103 +0.0%
1929 0.103 +0.0%
1930 0.103 +0.0%
1931 0.103 +0.0%
1932 0.103 +0.0%
1933 0.103 +0.0%
1934 0.103 +0.0%
1935 0.103 +0.0%
1936 0.103 +0.0%
1937 0.103 +0.0%
1938 0.103 +0.0%
1939 0.103 +0.0%
1940 0.103 +0.0%
1941 0.217 +110.7%
1942 0.38 +75.1%
1943 0.38 +0.0%
1944 0.38 +0.0%
1945 0.477 +25.5%
1946 0.477 +0.0%
1947 0.477 +0.0%
1948 0.477 +0.0%
1949 0.477 +0.0%
1950 0.512 +7.3%
1951 0.512 +0.0%
1952 0.512 +0.0%
1953 0.572 +11.7%
1954 0.358 -37.4%
1955 0.302 -15.6%
1956 0.274 -9.3%
1957 0.274 +0.0%
1958 0.274 +0.0%
1959 0.274 +0.0%
1960 0.274 +0.0%
1961 0.274 +0.0%
1962 0.274 +0.0%
1963 0.274 +0.0%
1964 0.274 +0.0%
1965 0.274 +0.0%
1966 0.274 +0.0%
1967 0.274 +0.0%
1968 0.274 +0.0%
1969 0.274 +0.0%
1970 0.274 +0.0%
1971 0.274 +0.0%
1972 0.274 +0.0%
1973 0.274 +0.0%
1974 0.274 +0.0%
1975 0.274 +0.0%
1976 0.274 +0.0%
1977 0.274 +0.0%
1978 0.274 +0.0%
1979 0.615 +124.5%
1980 0.615 +0.0%
1981 0.584 -5.0%
1982 0.584 +0.0%
1983 0.584 +0.0%
1984 0.584 +0.0%
1985 0.584 +0.0%
1986 0.584 +0.0%
1987 0.584 +0.0%
1988 0.584 +0.0%
1989 0.627 +7.4%
1990 0.627 +0.0%
1991 0.627 +0.0%
1992 0.603 -3.8%
1993 0.678 +12.4%
1994 0.678 +0.0%
1995 0.678 +0.0%
1996 0.678 +0.0%
1997 0.802 +18.3%
1998 0.802 +0.0%
1999 0.802 +0.0%
2000 0.802 +0.0%
2001 0.717 -10.6%
2002 0.717 +0.0%
2003 0.717 +0.0%
2004 0.717 +0.0%
2005 0.679 -5.3%
2006 0.682 +0.4%
2007 0.682 +0.0%
2008 0.682 +0.0%
2009 0.699 +2.5%
2010 0.722 +3.3%
2011 0.722 +0.0%
2012 0.722 +0.0%
2013 0.704 -2.5%
2014 0.704 +0.0%
2015 0.704 +0.0%
2016 0.722 +2.6%
2017 0.711 -1.5%
2018 0.69 -3.0%
2019 0.65 -5.8%
2020 0.63 -3.1%
2021 0.371 -41.1%
2022 0.338 -8.9%
2023 0.31 -8.3%
2024 0.339 +9.4%
2025 0.523 +54.3%

Iran compared with similar countries

  • Iran's 0.523 is below the median for upper middle income countries, which is 0.599, 87% of the median. (48 countries reporting)
  • Iran's 0.523 is above the median for Middle East, North Africa, Afghanistan & Pakistan, which is 0.37, 1.4× the median. (22 countries reporting)

Averages by decade

DecadeAverage LowestHighest Years
1900s 0.4265 0.415 0.44 4
1910s 0.4253 0.415 0.436 4
1920s 0.1844 0.103 0.325 8
1930s 0.103 0.103 0.103 10
1940s 0.3845 0.103 0.477 10
1950s 0.3864 0.274 0.572 10
1960s 0.274 0.274 0.274 10
1970s 0.3081 0.274 0.615 10
1980s 0.5914 0.584 0.627 10
1990s 0.6975 0.603 0.802 10
2000s 0.7094 0.679 0.802 10
2010s 0.7051 0.65 0.722 10
2020s 0.4185 0.31 0.63 6

Countries ranked near Iran

  1. 94 Singapore 0.561 compare
  2. 95 Bolivia 0.56 compare
  3. 96 Lebanon 0.543 compare
  4. 98 Indonesia 0.517 compare
  5. 99 Nigeria 0.514 compare
  6. 100 Armenia 0.513 compare

See the full ranking of 174 places →

More reference data data for Iran

All data for Iran →

Frequently asked questions

What is legislative constraints on the executive index in Iran?
Legislative constraints on the executive index in Iran was 0.523 in 2025, according to Our World in Data.
What is the highest legislative constraints on the executive index recorded in Iran?
The highest recorded value was 0.802 in 1997.
What is the lowest legislative constraints on the executive index recorded in Iran?
The lowest recorded value was 0.103 in 1926.
How does Iran rank for legislative constraints on the executive index?
Iran ranks 97th out of 174 countries with data for 2025.
Is legislative constraints on the executive index rising or falling in Iran?
Over the last ten years it is down 25.7%. The long-run trend across the full record is rising.
Where does this Iran data come from?
The figures come from Our World in Data, published as part of Legislative constraints on the executive index. Statizoid updates them automatically from the source API.

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Legislative constraints on the executive index in Iran. Statizoid, drawing on Our World in Data. Retrieved 14 November 2026, from https://reference.statizoid.com/stat/legislative-constraints-on-the-executive-index/iran-islamic-rep/

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About this data

Indicator
Legislative constraints on the executive index
Source
Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
174 places, 23,601 data points, 1789–2025
Last refreshed