 Although the additional units increased market share in some markets, a number of franchisees complained that new units were cannibalizing sales from existing ones.Same-store sales for outlets open for more than one year were flat in the mid-1990s, a reflection of both the greater number of units and the mature nature of the U.S. market.The Extra Value Meal, a burger, fries and drink combination deal, was introduced from 1993, originally as part of a Jurassic Park-themed tie-in.