During the call, we will also discuss non-GAAP financial measures as defined by SEC Regulation G. Reconciliations of these non-GAAP measures to the comparable GAAP financial measures are included in our earnings release and in our supplemental information. This call is being recorded for rebroadcast for a period of time in the future. As such, it is important to note that management's comments include time-sensitive information that may be accurate only as of today's date August 1, 2012.
At this time, all participants are in listen-only mode. Following management's comments, the call will be opened for your questions. We ask that you limit your questions to two, so that we will have the opportunity to address all callers'. We will address additional questions as time permits, so you may reenter the queue after your initial two questions.
On the call today will be Steven Tanger, President and Chief Executive Officer; and Frank Marchisello, Executive Vice President and Chief Financial Officer. I will now turn the call over to Steven Tanger. Please go ahead, Steve.
Steven TangerThank you, Cindy, and good morning, everyone. Our ability to successfully increase rental rates resulted in strong same-center net operating income growth of 7% in the second quarter of 2012. This marks the 30th consecutive quarter of positive same center NOI growth dating back to when we first began reporting this metric in 2005. Comparable traffic for the six months ended June 30, 2012, was up over 4%, marking the fifth consecutive year of positive traffic comps. Tenant comparable sales for the rolling 12 months ended June 30, 2012, increased 3.9% to $375 per square foot. Continued positive comparable tenant sales have allowed us to achieve a blended increase in rents of 23.7% in the first half of 2012. Our low cost of occupancy, which was 8.4% at the end of 2011, and increasing tenant sales should allow us to capture significant embedded value in our portfolio over time, while maintaining a very profitable distribution channel for our tenants.