There is a 12% chance of an economic boom and a 23% 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 15.6% if the economy is booming, 9.4% if the economy is normal, and go down 6.0 if there is a recession. What is McDonald's expected return under these scenarios? Answer in percent, rounded to one decimal place.