Among the most surprising figures in Ascap’s report are that in 2014 it tracked 500 billion performances of songs, twice as many as it did the year before.

Online music is growing extremely fast. According to Nielsen, the amount of streaming last year through so-called on-demand services like Spotify and YouTube, which let people choose exactly what songs they listen to, was up 54.5 percent from the year before.

But Ascap has also increased its capacity to identify each of these performances, and collect licensing revenue from them. According to Ascap, it has identified more than 1.3 million pieces of music that were played last year on digital streaming services — some 30 times what it was able to recognize in 2013 — and as a result it has paid nine times as many songwriters for their work.

“Ascap had an incredibly successful 2014,” Elizabeth Matthews, the organization’s new chief executive, said in a statement. “We worked extremely hard and continually innovated in order to maximize the financial opportunities for our members in the face of an evolving and increasingly competitive global landscape.”

According to Ascap, the amount of money it collected from sources in the United States grew 6.7 percent last year, and international revenue increased nearly 5 percent. Among other growth areas was television, thanks in part to a number of new licensing agreements.