It's a bit funny you should say that, because right now there is this huge case about the government tunneling a private corporation which was supposed to build highways in the country all around the news in Slovakia :)

Transparency International publishes this thing so we don't need to go by gut feelings re. corruption as judged by the public:

http://www.transparency.org/cpi2014/results

Spoiler: Big differences across Europe

I love how Greenland's, like, some sort of anti-corruption candle on that map.

Also, I'm surprised that New Zealand, of all places, ranks higher than all but Denmark in cleanliness (and not surprised that North Korea and Somalia are tied in corruption).

I want to note that this is corruption as judged by business people. So it may not be much better,