That would reflect poorly on Norwegian workers skills.
About 15% of Norway's population is foreign born, about the same as US.
Most American immigrants were not born in Mexico either.
Country of origin for Norwegian immigrants #3 is Somalia,Pakistan is #5, and Iraq is #6 as of 2014.
Immigration to Norway - Wikipedia
Once 2016 info is available(in English for me) I pretty sure Syria will be top 5.
From 2014.
Immigrants’ income varies widely
"Immigrants with the lowest media incomes came from Iraq (NOK 195,600), Afghanistan (NOK 192,800), Eritrea (NOK 183,200) and Somalia. Somalians collectively earned just 50 percent of the median income in Norway, or NOK 163,800."