Denmark, Finland, Sweden, Norway and Singapore are at top 10 of least corrupt countries rank called the Corruption Perceptions Index (CPI), organized by the global anti-corruption watchdog Transparency International.
The 2018 CPI ranks the score by measure level of public sector corruption in 180 countries and territories, using a scale from zero (highly corrupt) to 100 (very clean).
According to Transparency International “more than two-thirds of countries score below 50, with an average score of only 43. Since 2012, only 20 countries have significantly improved their scores.”
Denmark is in the first place with 88 scores. Finland in the third with 85 scores along with Sweden and Singapore and Norway is in seventh place with 84 scores.