The report offers a warning that the abuse of power, secret dealings and bribery continue to ravage societies around the world.
More than two thirds of the 177 countries in the 2013 index score below 50, on a scale from 0 (perceived to be highly corrupt) to 100 (perceived to be very clean).
Denmark and New Zealand tie for first place with scores of 91, followed by Finland, Sweden and Norway. Australia and Canada tied in ninth with scores of 81. Britain was 14th with 76 and the United States tied with Uruguay in 19th place with a score of 73.
Afghanistan, North Korea and Somalia this year make up the worst performers, scoring just 8 points each.
Greece, one of the countries hit hardest by the European financial crisis, ranked in 80th place with a score of 40, though that was a still improvement of four points over last year’s result. By contrast Spain, whose economy is also suffering, dropped six points to 59 points and placed 40th on the list.
Access to the full report here.