4. The table below gives data for a small economy in which there are two final goods included in GDP: good X and good Y. Given the following data, answer the following questions. Show all your work, clearly indicating the operations you are conducting Production Prices Good 201 2016 2015 2016 5 X 30 20 $50 $40 Y 20 30 $100 $110 a. Calculate nominal GDP for each of these years. Nominal GDP 2015: Nominal GDP 2016: b. Calculate real GDP for each for each of these years. Use 2015 as the base year. Real GDP 2015: Real GDP 2016: c. Calculate the percentage change in real GDP from 2015 to 2016. Percentage Change