Pandora announced new metrics that reached in the month of December 2013. Listener hours were 1.58 billion, an increase of 13% from 1.39 billion during the same period last year. Share of total U.S. radio listening for Pandora in December was 8.60%, an increase from 7.58% at the same time last year. Active listeners were 76.2 million at the end of December 2013, an increase of 13% from 67.1 million during the same time period last year.
