Marketing
We coordinate domestic advertising and marketing at the national and local levels. The goals of our marketing strategy include driving comparable store sales and brand differentiation, increasing our total coffee and beverage sales, protecting and growing our morning daypart sales, and growing our afternoon daypart sales. Generally, our domestic franchisees contribute 5% of weekly gross retail sales to fund brand specific advertising funds. The funds are used for various national and local advertising campaigns including print, radio, television, online, mobile, loyalty, billboards, and sponsorships. Over the past ten years, our U.S. franchisees have invested approximately $2.3 billion on advertising to increase brand awareness and restaurant performance across both brands. Additionally, we have various pricing strategies, so that our products appeal to a broad range of customers. In August 2012, we launched the Dunkin' Donuts mobile application for payment and gifting, which built the foundation for one-to-one marketing with our customers. In January 2014, we launched a new DD Perks® Rewards loyalty program nationally, which is fully integrated with the Dunkin' Donuts mobile application and allows us to engage our customers in these one-to-one marketing interactions. As of December 28, 2013, our mobile application had over five million downloads.

Research and development
New product innovation is a critical component of our success. We believe the development of successful new products for each brand attracts new customers, increases comparable store sales, and allows franchisees to expand into other dayparts. New product research and development is located in a state-of-the-art facility at our headquarters in Canton, Massachusetts. The facility includes a sensory lab, a quality assurance lab and a demonstration test kitchen. We rely on our internal