16. GDP Growth (LO2, CFA2) Assume the following. In 2008, the U.S. had real GDP of $15.6 trillion and the CPI was at 90.52. At the end of 2018, real GDP in the U.S. was $18.4 trillion and the CPI was at 103.42. Calculate the compounded (i.e., geometric) growth rate for this 10-year period.