Production of the 757 ended on October 28, 2004, after 1,050 had been built for 54 customers. The 757-200 was by far the most popular model, with 913 built. Diminished sales amid an airline industry trend toward smaller jetliners led Boeing to end production without a direct replacement, in favor of the 737 family. The last 757 was delivered to Shanghai Airlines on November 28, 2005. In July 2012, 860 of the narrow-body twinjets were in airline service, and Delta Air Lines was the largest operator with 169 aircraft.