option, and continues to offer Ottawa-based phone numbers to new and existing customers. 7-Eleven is similarly absent from the Quebec market due to its saturation by chains like Alimentation Couche-Tard and Boni-soir, and by independent dépanneurs. In March 2016, 7-Eleven acquired 148 Imperial Oil-owned Esso gas stations in Alberta and British Columbia for C$2.8 billion. Most of their convenience stores were converted to 7-Eleven stores, and they remain supplied by Esso. Some locations were not converted to 7-Eleven; these locations operate under the transitional banner "smartstop 24/7" with their existing store formats, typically inherited from the previous On the Run chain. Mexico In Mexico, the first 7-Eleven store opened in 1976 in Monterrey in association with Grupo Chapa (now Iconn) and 7-Eleven, Inc. under the name Super 7. In 1995, Super 7 was renamed to 7-Eleven, which now has 1,835 stores in several areas of the country. When stores are located within classically designed buildings (such as in Centro Histórico buildings) or important landmarks, the storefront logo is displayed in monochrome with gold or silver lettering. United States Supermarket News ranked 7-Eleven's North American operations No. 11 in the 2007 "Top 75 North American Food Retailers," based on the 2006 fiscal year estimated sales of US$15.0 billion. Based on the 2005 revenue, 7-Eleven is the 24th largest retailer in the United States. , 8,144 7-Eleven franchised units exist across the United States. Franchise fees range between US$10,000 – $1,000,000 and the ongoing royalty rate varies. 7-Eleven America has its headquarters in the Cypress Waters development in Irving, Texas. Small-size Slurpees are free on "7-Eleven Day", on July 11. This holiday first became widely celebrated on July 11, 2008, when first discovered by J. Brabank and C. Johnson. One exception is 2020, when the COVID-19 pandemic caused that year's cancellation. 7 Rewards members got a free medium Slurpee in their app instead. 7-Eleven Stores of Oklahoma operated independently beginning in 1953 under an agreement with the Brown family. As part of this franchise agreement, 7-Elevens in Oklahoma bore slight differences to stores elsewhere: for instance, products such as Big Bite hot dogs were not sold there, the Slurpee was branded as the "Icy Drink", and Oklahoma stores operated their own loyalty program called "Thx!", which did not intersect with the national 7Rewards system. On March 2, 2020, 7-Eleven, Inc. announced it had officially closed on the acquisition of over 100 of