In 2009, Internationale Outstanding University (IOU) had an enrollment of 27,329 undergraduates, each of whom paid $6,250 per year in tuition. In 2010, enrollment was 27,020 students, and tuition was raised 3.8%. In 2011, IOU received $186.8M in revenue from student tuition, and enrollment was 27,948 students. In 2012, it is estimated that tuition will be $6,927 and IOU needs to receive 4.6% more total revenue from tuition than in 2011. What was the growth in enrollment in from 2009 to 2010?