That’s how many weeks The Home Depot has been radio’s top advertiser according to Media Monitors. The big-box home improvement chain ran 72,634 commercials on radio stations all across the country last week. GEICO was second again with 44,278. Coming in third was Lowe’s with 39,557. Pepsi was fourth (31,159), and AT&T was fifth (30,568). Discover was the week’s biggest mover going from 52nd to ninth.