In Town of Gilbert v. Maricopa County, 213 Ariz. 241, 245,11, 141 P.3d 416, 420 (2006), the Court held that the population parameters placed on legislation governing the formation of county island districts constituted an impermissible special law because there was no probability that any town, other than Gilbert, "would fall within the population-based classifications of the legislation" within "the next fifteen to twenty years." 213 Ariz. at 247,22, 141 P.3d at 422. The Court explained that "the remote possibility of only one other entity being able to enter the class in the next nineteen years is insufficient to satisfy the third prong of elasticity." Id. at23.