[vesinisa]

You can actually access the public tax information for anyone if you visit the tax office or call their free customer service. Newspapers publicise only the top earners, but nothing stops you from finding out how much your neighbour earned last year in income and capital gains, if you really want to (and I guess quite many want, Finland is after all known as the "land of million of enviers" in addition to the more famous "land of thousand lakes".)