Average age, in years, of the thirty most frequently played holiday songs : 61

Year when the youngest of these songs, Mariah Carey’s “All I Want for Christmas Is You,” was released : 1994

Percentage change since 2005 in annual payments made to the music-licensing organization BMI : +40

In overall music-industry revenue : –30

Annual revenue earned on “Happy Birthday” before a judge ruled that Warner Music never owned rights to the song : $2,000,000

Amount spent last year on U.S. broadcast-television advertising : $40,000,000,000

On U.S. Internet advertising : $49,000,000,000

Percentage change since last year in…