3. The below table presents economic data of ECON Land. Year Population Nominal GDP GDP Deflator Real GDP Real GDP per capita 2018 10,000 $280,000,000 100 2019 12,000 $319,000,000 110 2020 13,200 $391,000,000 115 a) Calculate real GDP. b) Calculate real GDP per capita in each year. Round the number to two decimal places. c) Which year indicates lowest purchasing power? Explain. 4. List the four determinants of an economy's productivity. In your opinion which determinant is important for the country like Thailand to build up economic growth of the country. Explain