2010 Corruption Perceptions Index (CPI) of Transparency International

2010 Corruption Perceptions Index (CPI) of Transparency International

The 2010 CPI measures the degree to which public sector corruption is perceived to exist in 178 countries around the world. It scores countries on a scale from 10 (very clean) to 0 (highly corrupt).

The 2010 results are drawn from 13 surveys and assessments published between January 2009 and September 2010.

The 2010 CPI covers two countries fewer than last year’s edition. The slight change resulted from individual sources adjusting the range of countries they assess. These adjustments in coverage made it possible to include Kosovo for the first time, but led to the exclusion of Saint Lucia, Saint Vincent and the Grenadines, and Suriname, for which only two sources of information were available this year.

Given its methodology, the CPI is not a tool that is suitable for trend analysis or for monitoring changes in the perceived levels of corruption over time for all countries. Year-to-year changes in a country/territory’s score can result from a change in the perceptions of a country’s performance, a change in the ranking provided by original sources or changes in the methodology resulting from TI’s efforts to improve the index.

If a country is featured in one or more specific data sources for both of the last two CPIs (2009 CPI and 2010 CPI), those sources can be used to identify whether there has been a change in perceived levels of corruption in that particular country compared to the previous year. TI has used this approach in 2010 to assess country progress over the past year and to identify what can be considered to be a change in perceptions of corruption. These assessments use two criteria:

* there is a year-on-year change of at least 0.3 points in a country’s CPI score, and
* the direction of this change is confirmed by more than half of the data sources evaluating that country.

Based on these criteria, the following countries showed an improvement from 2009 to 2010: Bhutan, Chile, Ecuador, FYR Macedonia, Gambia, Haiti, Jamaica, Kuwait and Qatar. The following countries showed deterioration from 2009 to 2010: the Czech Republic, Greece, Hungary, Italy, Madagascar, Niger and the United States.


CPI 2010 source data

About CPI 2010 sources

Transparency International
October 26, 2010