(Reuters) - “Star Wars” toys generated sales of more than $700 million in the United States in 2015, making them the No.1 property in the toy industry during the year, a retail research group said. Five hundred replicas of the Stormtrooper characters from "Star Wars" are seen on the steps at the Juyongguan section of the Great Wall of China during a promotional event for "Star Wars: The Force Awak