New Delhi: A list of the most and least corrupt countries was released on Tuesday by Transparency International, known as 2023 Corruption Perceptions Index (CPI), showing that most countries have made little to no progress in tackling public corruption. The report highlights serious corruption problems as more than two thirds of countries have scored below 50 out of 100 (very clean).New Delhi: A list of the most and least corrupt countries was released on Tuesday by Transparency International, known as 2023 Corruption Perceptions Index (CPI), showing that most countries have made little to no progress in tackling public corruption. The report highlights serious corruption problems as more than two thirds of countries have scored below 50 out of 100 (very clean).