D Question 19 2 pts Aggregate economic output grows by 4% per year. Capital supply grows at 2% per year and labor supply grows at 4% per year. Capital and labor have equal factor shares. What is the growth rate of total factor productivity? Enter your answer in the space below without a percentage sign. For example, if your answer is "12%" enter "12". D Question 20 2 pts Total factor productivity grows by 2% per year. Capital supply grows at 2% per year and labor supply grows at 2% per year. Capital and labor have equal factor shares. What is the growth rate of aggregate economic output? Enter your answer in the space below without a percentage sign. For example, if your answer is "12%" enter "12"