The index, which ranks 180 countries and territories by their perceived levels of public sector corruption according to experts and businesspeople, uses a scale of zero to 100, where zero is highly corrupt and 100 is very clean.

More than two-thirds of countries score below 50 on this year’s CPI, with an average score of just 43.

While there are exceptions, the data shows that despite some progress, most countries are failing to make serious inroads against corruption.