The index showed Central Asia and the South Caucasus as areas of particular concern. The report says the lowest regional performer is Turkmenistan, which was given the world's third-worst rating.
The worst-ranked Arab country was Iraq, at 137th place.
Romania was ranked as having the worst public-sector corruption among states currently negotiating European Union membership, which also includes Bulgaria, Croatia, and Turkey.
Iceland, Finland, and New Zealand received the best ratings.
Transparency International Chief Talks About Corruption In CIS