Do You Know? Corruption Index 2011

Transparency International's transparency index

North Korea is the world’s most corrupt country along with Somalia and Afghanistan. On the other hand, New Zealand is the less corrupt, followed by Denmark and Finland.

This year, two thirds of countries covered by the index were given scores less than 5 – which means they are considered significantly corrupt.

You can check all the information at Transparency International and at The Guardian’s Data Blog.