In 2019, Canadian Gross Domestic Product (GDP) at current market prices was 2,310,712 million dollars while real Gross Domestic product was 2,102,304 million dollars. In 2012, both Canadian GDP at current market prices and real GDP were the same value- 1,827,201 million dollars. Differentiate between Canadian GDP at current market prices and real GDP to explain why the two values were the same in 2012 but different in 2019.