The table shows data on U.S. international trade as reported by the U.S. Bureau of the Census. U.S. Exports U.S. Imports Year (billions of $) (billions of $) 1990 537.2 618.4. 2002 974.1 1392.1 U.S. Trade Balance = Exports - Imports (billions of $) What is the average rate of change between 1990 and 2002 for the trade balance? Round your answer to one decimal place. -81.2 -418.0 Average rate of change of the trade balance is i billion dollars per year eTextbook and Media