TIs annual Corruption Perceptions Index claims to be an index of corruption in the world – why then does it include only 159 countries?
No country has been included in the CPI without results from a minimum of three surveys – because we insist on a solid empirical basis for the index. As a result, there are only 159 countries in the CPI out of a total of more than 200 sovereign nations. In TI’s experience, it is apparent that corruption is a major problem in many countries not included in the CPI. The CPI provides a snapshot of the views of decision-makers and business people, both locals and expatriates, about the level of corruption in a country. That is an incredibly important indicator of the image a country conveys to investors and potential business partners. A poor score in the CPI is a clear signal that a government has to make drastic changes – and to be seen to be doing so. For further information on the CPI as well as other surveys see “Corruption Surveys and Indices”.