Blake Shelton and Gwen Stefani's "Nobody but You" pushes 12-10 on Billboard's Country Airplay chart (dated March 28), gaining by 14% to 22.6 million in audience in the week ending March 22, according to Nielsen Music/MRC Data.Shelton scores his 34th Country Airplay top 10, a run that started in 2001 with his launch track "Austin," which dominated for five weeks, becoming his first of 26 No.