The unemployment rate of western states is 5.2%, for eastern states it is 5.9%, for southern states it is 5.2%, and for Midwestern states it is 5.1%. The western states comprise 10% of the labor force, the eastern states comprise 25% of the labor force, the southern states comprise 28% of the labor force, and the midwestern states comprise the remainder of the labor force. Find the unemployment rate for the nation. (please round your answer to 2 decimal places)