Top 10 World's Least Corrupt Countries

Corruption is much more likely to flourish where democratic foundations are weak and, as we have seen in many countries, where undemocratic and populist politicians can use it to their advantage. Since its inception in 1995, the Corruption Perceptions Index, Transparency International’s flagship research product, has become the leading global indicator of public sector corruption. The index offers an annual snapshot of the relative degree of corruption by ranking countries and territories from all over the globe. In 2012, Transparency International revised the methodology used to construct the index to allow for comparison of scores from one year to the next. The 2018 CPI draws on 13 surveys and expert assessments to measure public sector corruption in 180 countries and territories, giving each a score from zero (highly corrupt) to 100 (very clean).

Information sources:
Corruption Perceptions Index 2018
https://www.transparency.org/cpi2018

These are the world's least – and most – corrupt countries
https://www.weforum.org/agenda/2019/02/least-corrupt-countries-transparency-international-2018

Corruption Perceptions Index
https://en.wikipedia.org/wiki/Corruption_Perceptions_Index