It is the goal of this state that not less than 30 percent of telephone directories distributed in this state be recycled on and after January 1, 1994, that 35 percent of telephone directories distributed in this state be recycled on and after January 1, 1996, that 40 percent of telephone directories distributed in this state be recycled on and after January 1, 1998, and that 50 percent of telephone directories distributed in this state be recycled on and after January 1, 2000.