1999 NEC had a sleeper: It requires AFCI protection for branch circuits feeding 120 volt, 15 and 20 amp bedroom receptacle outlets installed after 2002.
The 2002 NEC requires AFCI protection for all 120 volt, 15 and 20 amp branch circuits feeding outlets in bedrooms. (added lights, 120 volt AC units and smokies)
The 2005 NEC also requires AFCI protection in all outlets in bedrooms, but allows receptacle type AFCI devices if fed by no more than 6 feet of conductor in a metal type conduit or cable. There is a sleeper in the 2005 NEC too. AFCI devices are required to extend protection to the cord connected appliance by 2008.