"Lost" has regularly been ranked by critics as one of the greatest television series of all time. The first season had an estimated average of 16 million viewers per episode on ABC. During its sixth and final season, the show averaged over 11 million U.S. viewers per episode. "Lost" was the recipient of hundreds of industry award nominations throughout its run and won numerous of these awards, including the Emmy Award for Outstanding Drama Series in 2005, Best American Import at the British Academy Television Awards in 2005, the Golden Globe Award for Best Drama in 2006, and a Screen Actors Guild Award for Outstanding Ensemble in a Drama Series. Users of IMDbPro gave "Lost" the highest average ranking for any television series during the first ten years (2002–2012) of the website's operation.