Taking bribes is what people think about when they hear corruption. But in developed nations thats not usually it. They do it for power. And I can say with certainty in the last two decades the Dutch government has increasingly been pressuring the press, hiding information, putting political friends in investigation committees, classifying things because they would reflect bad on the politicians etc I am not well versed in the state of every nation but if you dive deeply into dutch politics its been getting increasingly worse, and because the more visible trends seem to line up with other countries I do believe its getting worse in many places. I might be overgeneralizing though.