ssume the following. In 2008, the U.S. had real GDP of $16.6 trilion and the CPI was at 90.72 . At the end of 2018, real GDP in the U.S. as $20.4 trillion and the CPI was at 104.42. Calculate the compounded (i.e., geometric) growth rate for this 10-year period. (Use Excel answer this question. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.)