There is a 14% chance of an economic boom and a 21% chance of a recession in the next year. Otherwise, the economy is expected to stay normal. You forecast that McDonald's stock will go up 17.1% if the economy is booming, 8.9% if the economy is normal, and go down 7.0 if there is a recession. What is McDonald's expected return under these scenarios? Answer in percent, rounded to one decimal place.