Youre trying to determine whether or not to expand your business by building a new manufacturing plant. The plant has an installation cost of $12.1 million, which will be depreciated straight-line to zero over its four-year life. If the plant has projected net income of $1,375,000, $1,620,000, $1,380,000, and $1,210,000 over these four years, what is the projects average accounting return (AAR)? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places.