Control of corruption during each president's tenure
Every president since 1991, ranked by how the control of corruption changed from their first day in office. Politare shows what happened during a tenure; it does not claim the office-holder caused it.
| # | President | In office | Total | Per year | Chart |
|---|---|---|---|---|---|
| 1 |  Moon Jae-in | 10 May 2017 – 10 May 2022 | +8.2 points 2016 → 2021 | +1.6 points/yr | |
| 2 |  Roh Moo-hyun | 25 Feb 2003 – 25 Feb 2008 | +4.6 points 2002 → 2007 | +0.9 points/yr | |
| 3 |  Yoon Suk Yeol | 10 May 2022 – 4 Jun 2025 | +2.2 points 2021 → 2024 | +0.7 points/yr | |
| 4 |  Lee Myung-bak | 25 Feb 2008 – 25 Feb 2013 | +0.4 points 2007 → 2012 | +0.1 points/yr | |
| 5 | Park Geun-hye | 25 Feb 2013 – 9 Dec 2016 | −3.5 points 2012 → 2016 | −0.9 points/yr |
Sorted by total, highest first. Every row is indexed to the last count complete before the first day in office ("from" marks a start that had to move because that count had no data, or because the period cut it); Levels are per cent changes, rates are differences in points; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. points, 0 to 100, higher is better · World Bank, Worldwide Governance Indicators (GOV_WGI_CC.SC): perceptions of public power used for private gain, petty and grand, a score from 0 to 100 with its 90 % interval · South Korea data · as of Sep 2026.