I like how they make grand claims and when you finally drill down into the data you find it's based on something like ..

"We took the opinion of this random bank about how efficient it is to allocate capital in the country, which translates to how corrupt it is"

or

"We had this (ironically, corrupt) NGO make a report where they asked some unspecified number of "credentialed" economics professors at an unspecified number of unspecified universities what they think about corruption in their country."

Yes, those are actual examples of the data/methodology they provide. That's the type of data backing up their ratings.

I expect to see the USA flying down the ranks this year... seems their whole government and judiciary is for sale, and not even expensive