If you question the numbers, I suggest you contact Blindheim and the other historians I mentioned.
I'm sure they will help you with some in-depth information.

And I'm not talking about people forced to do labour.
I'm talking about people who chose to work for the germans because the germans paid well, and who made a good living on this.
Others chose not to work for the germans, for example some teachers. They were sent to labour camps and had to do forced labour.

Regards
RAM