Purchasing-power parity holds between the nations of Ectenia and Wiknam, where the only commodity is Spam. In 2015, a can of Spam cost 2 dollars in Ectenia and 16 pesos in Wiknam. The exchange rate between Ectenian dollars and Wiknamian pesos was pesos per dollar. Over the next 20 years, inflation is expected to be 3.5 percent per year in Ectenia and 7 percent per year in Wiknam. If this inflation comes to pass, what will happen over this period to the price of Spam and the exchange rate