Domino's had impressive global retail sales of $4.0 billion in the fourth quarter of 2017, with a large portion of those sales coming from the U.S. market. Their sales can be attributed to strong same store sales growth of 9.5% domestically and 2.6% internationally, along with a net store growth of 217. The company generates revenue and earnings through charging franchisees royalties and fees. Despite a decrease in effective tax rates, Domino's has seen consistent growth in systemwide sales since 2009. However, recent reports show a decline in international same-store sales growth, causing a decrease in stock value. The company's focus on tracking growth and trends in their brand is reflected in the efforts of their CFO to analyze the impact of a calendar change on their sales growth.