In 2009, International Outstanding University (IOU) had an enrollment of 26,710 undergraduates, each of whom paid $6,095 per year in tuition. In 2010, enrollment was 26,635 students, and tuition was raised 3.2%. In 2011, IOU received $186.8M in revenue from student tuition, and enrollment was 28,321 students. In 2012, it is estimated that tuition will be $6,989 and IOU needs to receive 5.0% more total revenue from tuition than in 2011.

What was the growth rate of tuition from 2010 to 2011?