Transparency international corruption perceptions index methodology
In 2012, Transparency International revised the methodology used to construct the index to allow for comparison of scores from one year to the next. The 2018 CPI 27 Jan 2017 The Corruption Perceptions Index is the leading global indicator of Perceptions Index's methodology, Transparency International would like Each year we score countries on how corrupt their public sectors are seen to be. Our Corruption Perceptions Index sends a powerful message and governments