Based on expert opinion from around the world, the Corruption Perceptions Index measures the perceived levels of public sector corruption worldwide, and it paints an alarming picture. Not one single country gets a perfect score and more than two-thirds score below 50, on a scale from 0 (highly corrupt) to 100 (very clean). Corruption is a problem for all countries. A poor score is likely a sign of widespread bribery, lack of punishment for corruption and public institutions that don’t respond to citizens’ needs. In 2014 Corruption Perceptions Index, Iran stood at 136th place among 175 countries.