Answer:
Per capita real GDP
Explanation:
GDP is the monetary measure of all goods and services produced within the country’s boundaries,
However, the value may go up or down as a result of inflation. To prevent this, real GDP is computed which hold inflation constant.
Per capital real GDP shows the output of the country per head within a period especially one year.
As the per capita real GDP increases with time, the better the performance. Also countries with higher per capita real GDP are considered better than those with lower per capita real GDP.