So, it's not just me who can find country of origin effects on crime. Even in 
Sweden someone else dared.
https://openarchive.ki.se/xmlui/handle/10616/41002 …pic.twitter.com/0Bty8D5KjI
-
Immigrants commit lots more crimes, but crime is not going up in Sweden. Aging of the native population? It woudl be good to look at country of origin, since maybe the biggest immigrant group is Norwegians (I don't know), muddying the waters.
Finns as well. They don't release the country of origin ones, but a few researchers have access, and we found some data from the 1980s. https://emilkirkegaard.dk/en/?p=6434