I have heard a school in the Netherlands is producing 500 pilots each year
Nope in the best of times all the Dutch schools together did 700 to 800 at most this was including KLM, CAE, Stella, Martinair, etc. Since 2008 the schools have halved their output or even less. On top of that one of the two banks stopped lending for flight training and the schools they were lending to are expected to close or become a rich boys flying club.... So 200 a year is more like it...