Transparency International (TI) is a leading international non-governmental organization addressing corruption. This includes, but is not limited to, political corruption. Due to the hidden nature of corruption and the paucity of criminal convictions, scientific evidence is difficult to come by.
TI has index from 0 to 10 , which is a corruption score. The higher the score, the less corrupt the country.
In 2007 , with a CPI ‘score’ of 9.6 are Finland, Iceland and New Zealand are the countries with very very little corruption.
At the bottom, with a score of 1.8 is Haiti is the most corrupt country in the world.
Countries that have significantly improved their rating since the 2005 index were Algeria, Czech Republic, India, Japan, Latvia, Lebanon, Mauritius, Paraguay, Slovenia, Turkey, Turkmenistan, and Uruguay.
Least Corrupt countries
Finland, Iceland and New Zealand
Here is the list of Most Corrupt Countries in the world from forbes
4. Guinea (Conakry)
6. Democratic Republic Congo/Kinshasa
10. Equatorial Guinea
11. Cote d’Ivoire
16. Sierra Leone
21. Republic of Congo Brazzaville