Poll: Worldwide corruption rising
People believe corruption has worsened over the past three years according to an international watchdog's worldwide public opinion survey.
Transparency International said its survey of more than 91,000 people in 86 countries and territories shows a quarter say they paid bribes to institutions - the police being the most frequent recipient.
According to the survey more than 20 countries report significantly more bribery than when asked in 2006.
Views on corruption trends are most negative in North America and Europe where 73% and 67% respectively think corruption has increased over the past three years.
But only 5% in EU and North American countries report paying bribes while more than 50% in sub-Saharan Africa say they have.