| Indicator | Value |
|---|---|
| Electoral democracy index | 0.819 indexV-Dem [2025] |
| Liberal democracy index | 0.734 indexV-Dem [2025] |
| Government effectiveness | 2.09 indexWorld Bank WGI [2024] |
| Rule of law | 1.51 indexWorld Bank WGI [2024] |
| Control of corruption | 1.36 indexWorld Bank WGI [2024] |
| Voice & accountability | 1.12 indexWorld Bank WGI [2024] |
| Political stability | 1.13 indexWorld Bank WGI [2024] |
| Regulatory quality | 1.33 indexWorld Bank WGI [2024] |
| Cabinet fragmentation index | 12.6 indexWB DPI [2023] |
| Governing majority margin | 0.626 %WB DPI [2023] |
| Parties in executive cabinet | 291WB DPI [2023] |
| Women in parliament | 15.7 %WB Gender [2024] |
| Constitutional history supplement | No authoritative open source found |
| Legal system | civil law system based on German model; also reflects Anglo-American influence and Japanese traditions; Supreme Court reviews legislative actsCIA World Factbook [2025] · 2026 archive |
| Suffrage (voting rights) | 18 years of age; universalCIA World Factbook [2025] · 2026 archive |
previous 1890; latest approved 6 October 1946, adopted 3 November 1946, effective 3 May 1947
Source: CIA World Factbook (Historical Archive — final edition) · CC0 · Edition 2026-05
How to read these indices
V-Dem democracy indices range from 0 to 1 — higher values mean stronger democratic institutions. World Bank WGI governance estimates range from about −2.5 to +2.5, where higher is better. These are comparative indices across countries, not absolute scores.
