The following table gives real GDP figures for an economy for four years. Fill in the growth rate for each year, and then find the average annual growth rate for the period. Enter all answers as percentages rounded to one decimal place. Year Real GDP Growth Rate (%) 1999 150 billion 2000 162.0 billion 16.1% 2001 171.7 billion 10% 2002 188.9 billion The average annual growth rate for this period is%