Number of cases don't say anything. It's better to look at the amount of money.

You can have 500 politicians stealing 1 million euros each, and 5 politicians stealing 1 billion each.

So, if for 2 comunities of 1 million people with 300 politicians each, if in one comunity 1 politician steals 1.000 millions is more corrupt than one where 300 politicians steal 3 millions each?

Curious way of counting corruption

And, by the way, I think Catalonia is exactly as corrupt as the rest of the Spain, it is not a problem of the comunity, is a problem of the whole society which rewards that any people steal taxes or don't pay VAT

CiU, PP and PSOE are equal regarding corruption.