Corruption Perceptions Index 2012

The Corruption Perceptions Index is constructed by the Transparency International. The Corruption Perceptions Index measures the perceived levels of public sector corruption in countries worldwide. Based on expert opinion, countries are scored from 0 (highly corrupt) to 100 (very clean). Some countries score well, but no country scores a perfect 100. Two-thirds of the 176 countries ranked in the 2012 index score below 50, showing that public institutions need to be more transparent, and powerful officials more accountable.