the survey found police and the judiciary are the most prone to bribery : overall , nearly one - third said their contacts with police included paying a bribe , and 24 % said the same for the judicial system . in liberia and sierra leone , for example , more than 75 % of respondents reported paying levels remain very high worldwide , but people believe they have the power to stop corruption and the number of those willing to combat the abuse of power , secret dealings and bribery is significant , ” said huguette labelle , chair of transparency international , in a statement . however , two - thirds of the overall survey by transparency international found more than a quarter of people have paid a bribe when asked . the 2013 global corruption barometer is the eighth edition of the survey , which collected responses from more than 114,000 people in 107 countries . transparency international found that 27 % of respondents have paid a bribe over the past year . in the 36 countries that view police as the most corrupt , an average of 53 % of people were asked to pay a bribe by police , the survey found . the situation is even worse in countries where police and judicial corruption is a known problem . this survey is different from the group ’s annual corruption perceptions index : it measures the views of everyday people , rather than experts weighing other surveys to determine the perception of graft .