 Since 2006, The CW and MyNetworkTV have struggled significantly in the Nielsen ratings, despite The CW showing initial signs of promise.The CW has usually finished fifth in the Nielsen ratings, even falling behind Spanish-language network Univision at times, though it has come close to beating out NBC (which had similar ratings challenges beginning in the 2004–05 television season, before moderating in the 2012–13 season) on several occasions.However, The CW has had some successful series (by the standards of the network's viewership, which has rarely peaked above 4 million viewers for a single episode), such as "Gossip Girl", "The Vampire Diaries" and "Arrow".