Adding MIT:
http://mitadmissions.org/blogs/entry/mit-early-action-decisions-now-available-online5 (currently unavailable)
MIT EA 664 out of 9.557 (6.9%) (65.0% deferred, 26.1% denied, 1.9% withdrawn)
Harvard SCEA 964 out of 6,630 (14.5%)
Princeton SCEA 799 out of 5,402 (14.7%)
Yale SCEA 842 out of 5733 (14.7%) (55% deferred, 29% denied, 2% withdrawn/incomplete)
Penn ED 1,312 out of 7,074 (18.5%)
Brown ED 738 out of 3,502 (21.1%)
Duke ED 875 out of 4,090 (21.4%)