The formula y equals 15 left parenthesis 1.26 right parenthesis to the power of x gives the number of cellular phone users y (in millions) in some country for the years 1994 through 2006. In this formula, x = 0 corresponds to 1994, x = 1 corresponds to 1995, and so on. Use this model to predict the number of cellular phone users in the year 2006. The predicted number of cellular phone users in the year 2006 is million. (Round to the nearest whole number as needed.)