They wanted him to pay almost six years worth of his normal post-tax income. Did you have to pay six years worth of income? It took him a lot of work to get it down to 'only' 18.7k€.

This ranks right up there with the author who wrote a children's book about a village where they had to turn over 102% of the potatoes they grew. https://en.wikipedia.org/wiki/Pomperipossa_in_Monismania