The Corruption Perceptions Index (CPI) was established in 1995 by Transparency International as a composite indicator used to measure perceptions of corruption in the public sector in different countries around the world. During the past 20 years, both the sources used to compile the index and the methodology has been adjusted and refined. The most recent review process took place in 2012 , and some important changes were made to the methodology in 2012. The method that was used up until 2012 to aggregate different data sources has been simplified and now includes just one year’s data from each data source. Crucially, this method now allows us to compare scores over time, which was not methodologically possible prior to 2012. The methodology follows 4 basic steps: selection of source data, rescaling source data, aggregating the rescaled data and then reporting a measure for uncertainty. Given the changes in the 2012 methodology, this dataset contains two indicators (CPI score and country ranking) for both the old methodology (up to 2011) and the new one (from 2012 onwards), totalling the following four indicators:



1) Corruption Perception Index - Score - New Method (from 2012 onwards - scale from 0 to 100, where 0 represents very high levels of perceived corruption)

2) CPI score - Old methodology (from 1995 to 2011 - scale from 0 to 10, where 0 represents very high levels of perceived corruption)

3) CPI country ranking - New methodology (from 2012 onwards)

4) CPI country ranking - Old methodology (from 1995 to 2011)



For more informaiton please visit: http://www.transparency.org/news/feature/corruption_perceptions_index_2016

Indicators in this dataset

Displaying 1 - 4 of 4

Corruption Perception Index - Country Ranking (New Methodology, from 2012 onwards)

The Corruption Perceptions Index aggregates data from a number of different sources that provide perceptions of business people and country experts of the level of corruption in the public sector. This indicator uses the CPI scores calculated every year to rank countries based on the level of perceived corruption (the country with the lowest level of percieved corruption is ranked number one). This indicator is based on the CPI methodology updated in 2012 ((See: http://files.transparency.org/content/download/2055/13232/file/CPI_2016_...)). For additional information, please visit: http://www.transparency.org/news/feature/corruption_perceptions_index_2016

Corruption Perception Index - Country Ranking (Old Methodology, 1995-2011)

The Corruption Perceptions Index aggregates data from a number of different sources that provide perceptions of business people and country experts of the level of corruption in the public sector. This indicator uses the CPI scores calculated every year to rank countries based on the level of perceived corruption (the country with the lowest level of percieved corruption is ranked number one). This indicator is based on the old CPI methodology -- used between 1995 and 2011 and then updated in 2012 (See: file:///Users/marcello/Downloads/CPI_2016_TechnicalMethodologyNote_EN.pdf). For additional information, please visit: http://www.transparency.org/news/feature/corruption_perceptions_index_2016

Corruption Perception Index - Score (New Methodology, from 2012 onwards)

The Corruption Perceptions Index aggregates data from a number of different sources that provide perceptions of business people and country experts of the level of corruption in the public sector. The indicator ranges from 0 (Very high level of percieved corruption) to 100 (very low level of perceived corruption. This indicator is calculated using the methodology updated in 2012 (See: http://files.transparency.org/content/download/2055/13232/file/CPI_2016_...). For additional information, please visit: http://www.transparency.org/news/feature/corruption_perceptions_index_2016

Corruption Perception Index - Score (Old Methodology, 1995-2011)

The Corruption Perceptions Index aggregates data from a number of different sources that provide perceptions of business people and country experts of the level of corruption in the public sector. The indicator ranges from 0 (Very high level of percieved corruption) to 10 (very low level of perceived corruption. For the period 1995-2011 the indicator was calculated according to a methodology that has been revised starting from the 2012 round onwards (See: http://files.transparency.org/content/download/2055/13232/file/CPI_2016_...). For this reason the CPI scores for the period 1995-2011 have been separated from the CPI scores from 2012 onwards. For additional information, please visit: http://www.transparency.org/news/feature/corruption_perceptions_index_2016