Find the section of the Wall Street Journal that contains the daily quotations of foreign exchange rates. Get the exchange rates in terms of currency per U.S. dollar for the day you are reading this and for one year prior to this day for each of the following currencies: Australian dollar, Canadian dollar, Indian rupee, Japanese yen, Mexican peso, Polish zloty, and the South African rand. Use these data to explain whether the U.S. dollar has appreciated or depreciated against each currency over the last year.