<p>More schools have now reported their 2012 figures, so I have updated this. All figures from the CollegeBoard:</p>
<p>Harvard University: 1.04% (15/1448) 2012
University of Chicago: 2.12% (21/990) (of those 16 enrolled, 76% yield) 2012
Stanford University: 2.25% (34/1512) 2012
California Institute of Technology: 2.34% (5/214) 2012
Duke University: 2.83% (26/920) 2011
Yale University: 2.87% (28/974) 2012
Dartmouth College: 3.75% (30/799) 2012
Massachusetts Institute of Technology: 5.51% (25/454) 2012
Washington University in St. Louis: 5.83% (81/1389) 2012
Columbia University: 6.22% (147/2365) 2012
Johns Hopkins University: 8.31% (89/1071) 2012
Northwestern University: 8.55% (130/1521) 2011
University of Pennsylvania: 9.4% (197/2096) 2012
Brown University: 11.24% (214/1904) 2011
Carnegie Mellon University: 10.29% (79/768) 2012
Georgetown: 13.67% (282/2063) 2012
Rice University: 20% 2011
Cornell University: 21% 2011
University of California - Berkeley: 22% 2011
University of Southern California: 25% 2011
Wake Forest University: 26% 2011
University of California - Los Angeles: 27.96% (5290/18923) 2012
Vanderbilt University: 26.14% (362/1385) 2012
Emory University: 28% 2011
University of Virginia: 37.26% (895/2402) 2012
University of Notre Dame: 40% 2011</p>