Global Corruption Perceptions Index 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.
http://www.transparency.org/publications/publications/other/corruption_perceptions_index_2011