# Corruption Perceptions Index 2011 URL: https://www.transparency.org/en/publications/corruption-perceptions-index-2011 Type: Publication or report Published: 2011-12-01 Updated: 2019-11-22 --- 01 December 2011 The Corruption Perceptions Index ranks countries and territories according to their perceived levels of public sector corruption. It is an aggregate indicator that combines different sources of information about corruption, making it possible to compare countries. The 2011 Corruption Perceptions Index shows that no region or country in the world is immune to the damages of corruption, the vast majority of the 183 countries and territories assessed score below five on a scale of 0 (highly corrupt) to 10 (very clean). New Zealand, Denmark and Finland top the list, while North Korea and Somalia are at the bottom. ### Related publications ## [Regional Assessment of Integrity in Political Finance in South Asia, Southeast Asia and East Asia](https://www.transparency.org/en/publications/integrity-political-finance-asia) Publication • 03 September 2026 This report reviews systems across 17 countries to identify the areas of political finance most in need of reform. ## [Connecting the Dots: How financial intelligence units expose corrupt money flows and how they could do more](https://www.transparency.org/en/publications/connecting-the-dots) Publication • 24 June 2026 Financial intelligence units can play a key role in uncovering corruption, but only if they have the powers, resources and access to information they need. ## [Whistleblowing Authorities in Europe: Roles, challenges and lessons learned](https://www.transparency.org/en/publications/whistleblowing-authorities-in-europe-roles-challenges-and-lessons-learned) Publication • 19 June 2026 This report examines the institutional design, mandates and functioning of national whistleblowing authorities across Europe. ## [Strengthening Public Oversight: Good practices for partnerships between civil society and supreme audit institutions](https://www.transparency.org/en/publications/strengthening-public-oversight-good-practices-for-partnerships-between-civil-society-and-supreme-audit-institutions) Publication • 29 May 2026 Stronger collaboration between Supreme Audit Institutions and Civil Society Organisations is needed for better public financial oversight. ![](https://images.transparencycdn.org/images/CPI_2011_EN_116.jpg?auto=compress&fit=crop&fm=webp&w=1200) [Download](https://images.transparencycdn.org/images/2011_CPI_EN.pdf)