When it comes to corruption, some things never change. While Nigeria is consistently seen as one of the most corrupt countries, Finland, Denmark and New Zealand are viewed as perennially clean.
Every year since 1995, Transparency International has published its Corruption Perceptions Index, which ranks countries on a scale of 0 (most corrupt) to 10 (least corrupt).
Nigeria always comes in either last or second-to-last and every year Finland, Denmark and New Zealand fill three of the top four spots.
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