4) Here are some statistics about an economy. Using the statistics, calculate the average annual rate of growth in \"total factor productivity\" from the year 1966 to 1986. There is space below for your calculations. Average annual rate of growth in total factor productivity from 1966 to 1986: _ percent GDP in 1966: $50 million Total wages, salaries, and other payments to employees in 1966: $25 million. From 1966 to 1986, average annual rate of growth in: Real GDP 5% Labor input 4% Capital stock 6%