LOS ANGELES, Oct 3: NBC won U.S. Television’s official premiere week with key viewers for the first time since 2003, and swiftly announced full season orders on Tuesday for three of its new shows. Boosted by “Sunday Night Football – the nation’s most watched program – singing contest “The Voice” and futuristic new drama “Revolution,” NBC was first in the 18-49 age group prized by advertisers and showed a 12 percent increase in that demographic compared to the 2011 TV premiere week, Nielsen data showed. (agencies)