What is constraints on the executive score in Japan?

Constraints on the executive score in Japan was 7 in 2018, according to Polity 5 (2020) – processed by Our World in Data.

What is the highest constraints on the executive score recorded in Japan?

The highest recorded value was 7 in 1868.

What is the lowest constraints on the executive score recorded in Japan?

The lowest recorded value was 1 in 1800.

How does Japan rank for constraints on the executive score?

Japan ranks 1st out of 166 countries with data for 2018.

Is constraints on the executive score rising or falling in Japan?

Over the last ten years it is unchanged. The long-run trend across the full record is volatile.

Where does this Japan data come from?

The figures come from Polity 5 (2020) – processed by Our World in Data, published as part of Constraints on the Executive Score. Statizoid updates them automatically from the source API.

Constraints on the Executive Score in Japan

Name: Constraints on the Executive Score in Japan
Creator: Polity 5 (2020) – processed by Our World in Data
License: CC BY 4.0 (Our World in Data)

Japan: Constraints on the Executive Score was 7 in 2018. ◆ Volatile

Latest (2018)

Change on year

unchanged

World rank

1st

of 166 countries

All-time high

in 1868

All-time low

in 1800

Years of data

202

1800–2018

Constraints on the Executive Score in Japan, 1800–2018

Source: Polity 5 (2020) – processed by Our World in Data.

Analysis

The most recent figure for constraints on the executive score in Japan is 7, measured in 2018. That is the highest value across all 202 years on record.

Compared with earlier readings it is unchanged over ten years.

Over the whole period, constraints on the executive score in Japan peaked at 7 in 1868 and was at its lowest, 1, in 1800.

Japan ranks 1st of 166 countries on this measure, in the top 10%.

The series is highly variable year to year, so single readings are best treated with caution.

Averages by decade

Decade	Average	Lowest	Highest	Years
1800s	1	1	1	10
1810s	1	1	1	10
1820s	1	1	1	10
1830s	1	1	1	10
1840s	1	1	1	10
1850s	1	1	1	8
1860s	7	7	7	2
1870s	7	7	7	10
1880s	7	7	7	10
1890s	7	7	7	10
1900s	7	7	7	10
1910s	7	7	7	10
1920s	7	7	7	10
1930s	7	7	7	10
1940s	7	7	7	5
1950s	7	7	7	8
1960s	7	7	7	10
1970s	7	7	7	10
1980s	7	7	7	10
1990s	7	7	7	10
2000s	7	7	7	10
2010s	7	7	7	9

Countries ranked near Japan

See the full ranking of 167 places →

More reference data data for Japan

Spring temperature anomalies 1.24 °C (2026)
Summer temperature anomalies 0.1053 °C (2026)
Temperature anomalies by month -0.7172 °C (2026)
Universal right to vote in practice 2 (2025)
Autumn temperature anomalies 1.9 °C (2025)
Winter temperature anomalies 0.5865 °C (2025)
Consumer price index 118.04 2010 = 100 (2025)
Universal right to vote 2 (2025)
Competitive elections 1 (2025)
Men's universal right to vote 1 (2025)

All data for Japan →

Frequently asked questions

What is constraints on the executive score in Japan?: Constraints on the executive score in Japan was 7 in 2018, according to Polity 5 (2020) – processed by Our World in Data.
What is the highest constraints on the executive score recorded in Japan?: The highest recorded value was 7 in 1868.
What is the lowest constraints on the executive score recorded in Japan?: The lowest recorded value was 1 in 1800.
How does Japan rank for constraints on the executive score?: Japan ranks 1st out of 166 countries with data for 2018.
Is constraints on the executive score rising or falling in Japan?: Over the last ten years it is unchanged. The long-run trend across the full record is volatile.
Where does this Japan data come from?: The figures come from Polity 5 (2020) – processed by Our World in Data, published as part of Constraints on the Executive Score. Statizoid updates them automatically from the source API.

Download this data

CSV · JSON — 202 observations, free to reuse under CC BY 4.0 (Our World in Data).

About this data

Indicator: Constraints on the Executive Score
Source: Polity 5 (2020) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 167 places, 17,813 data points, 1789–2020
Last refreshed: 07 August 2026

Indicates the extent to which the executive is constrained. It ranges from unconstrained executives (score of 1), over slight or moderate constraints (score of 3), and substantial constraints (score of 5), to an executive that is subordinated to or on par with other authorities (score of 7). The remaining categories are intermediate ones.