Denmark, New Zealand and Singapore maintained their top rankings in a list of the world’s least corrupt governments and public sectors in 2010, according to watchdog group Transparency International (TI).

The 2010 Corruption Perceptions Index (CPI) shows that nearly three quarters of the 178 countries in the index score below five. The scoring is from 0-10 with 0 being the most corrupt and 10 being the least.

The United States, however, fell out of the top twenty in global rankings with a score of 7.1 as perceptions of corruption there increased.