Do a Web search and find a Website where you can look up historical exchange rates. Find the exchange rates between the U.S. dollar and the euro, the Canadian dollar, the Japanese yen, and the Chinese yuan at the beginning of 2014 and at the end of 2014. Did the U.S. dollar appreciate or depreciate against these currencies during 2014? Go to www.census.gov and find the value of U.S. exports, imports, and the U.S. trade balance at the beginning of 2014 and at the end of 2014. Did these values increase or decrease during 2014? Explain how the changes in the exchange rates may have had an impact on the changes in U.S exports, imports, and the trade balance.