In 2009, the broadcast networks averaged 13 minutes and 25 seconds of commercial time per hour. In 2013, that figure grew to 14 minutes and 15 seconds. The growth has been even more significant on cable television. In 2009, cable networks averaged 14 minutes and 27 seconds per hour. Last year, the average was 15 minutes and 38 seconds. At the same time, the number of 30-second commercials has declined while 15-second spots have increased.