Answer:
In the 4th year the society welfare increased the most.
Year 2: 19,560 /1.02 = 19,176.47 Real GDP
Year 3: 20,495 / 1.05 = 19,519.05 Real GDP
Year 4: 21,280 / 1.06 = 20,075.47 Real GDP
Explanation:
To calcualte the real GDP per year we haveto divide each year by the deflactor
Year 2: 19,560 /1.02 = 19,176.47 Real GDP
Year 3: 20,495 / 1.05 = 19,519.05 Real GDP
Year 4: 21,280 / 1.06 = 20,075.47 Real GDP
Increase per year
Real GDP over previous year GDP
Year 2: 19,176.47 / 19,000.00 - 1 = 0.93%
Year 3: 19,519.05 / 19,176.47 - 1 = 1.79 %
Year 4: 20,075.47 / 19.519.05 - 1 = 2.85%