;NOK Billion;Share in per cent;Change in per cent; 2017;2017;2016 - 2017; Imports;684.6;100.0;8.8; Ships and oil platforms;22.1;3.2;12.3; ;;;; Exports;860.7;100.0;14.5; Crude oil;223.1;25.9;18.9; Natural gas;203.1;23.6;26.0; Natural gas condensates;5.0;0.6;30.6; Ships and oil platforms;11.0;1.3;-11.8; Mainland exports;418.5;48.6;8.3; ;;;; The trade balance;176.1;.;43.7; The mainland trade balance;-244.0;.;-9.5;