16.2 % were Finnish , 15.7 % Irish , 13.0 % German , 9.2 % Swedish , 6.5 % Norwegian and 5.4 % of American extraction .
16.2 % were of Finnish , 15.7 % Irish , 13.0 % German , 9.2 % Swedish , 6.5 % Norwegian and 5.4 % American ancestry .