Many countries had their worst showing in more than a decade in an index gauging public sector corruption, from the U.S. and France to authoritarian nations such as Russia and Venezuela.

Many countries have their worst showing in more than a decade in an index that serves as a barometer of public sector corruption worldwide.

Corruption Perceptions Index found that 47 out of 180 nations recorded their lowest scores since the ranking methodology was updated in 2012. The watchdog warned that corruption remains dangerously high worldwide,