These are artifically inflated figures, and if you add to this how the median age of white Dutch is 40, while the immigrants are much lower, it further skews the results.
There is no debate immigrants commit more crime then the native, but nothing close to those artifically inflated percentages, there is clearly an agenda at play her.
The other thing people don't know about the Netherlands and why so many Somalis moved away from that socialist hell hole including myself long before it became popular, is the entrenched racism especially at the schools, universities and work places.
You can't become what you want, there is no socioeconomic mobility, your teacher dictates your faith not the scores you get, can't open a business without cutting of your arm and leg, its by far the worst country for immigrants in the western world.
I have personally met people who did tahriib from Somalia who ended up going back home, its an absolute hell hole for immigrants, I really feel for them.