An American restaurant chain of fast food, Taco Bell is famous for serving Tex-Mex variety of food. The restaurant is based in the region of Irvine, in California and is a notable subsidiary of famous Yum! Brands, Inc. The restaurant went public in the year 1970. A compact version of first Taco Bell Express was launched in 1991, in San Francisco. The company has over 5,800 restaurants all over the United States and serves around two billion customers every year. However, eighty percent of the total number of the restaurants under this chain is operated and even owned under independent franchisees.