Happy Birthday, Billboard Artist 100! Taylor Swift Celebrates at No. 1

Alive Coverage
Taylor Swift onstage at Rock in Rio USA in Las Vegas in May, 2015.

Billboard's weekly ranking of the top musical acts in the U.S. completes its first year, with Swift on top again.

The Billboard Artist 100 chart wraps its first year, with Taylor Swift the top musical act in the U.S. for a record-extending 31st week (on the list dated July 11).

The Artist 100 is the first weekly survey dedicated to measuring artist activity across Billboard's most influential charts, including the Billboard Hot 100 songs chart, Top Album Sales and the Social 50. The Artist 100 blends data measuring album and track sales, radio airplay, streaming and social media fan interaction to provide a weekly multi-dimensional ranking of artist popularity.

See This Week's Entire Billboard Artist 100 Chart Here

With Swift atop the 52nd Artist 100, dating to the chart's launch (July 19, 2014), she extends her mark for the most weeks tallied at No. 1. And her lead is immense: Sam Smith is next with three total weeks at No. 1, followed by Drake, Ariana Grande, Maroon 5 and Meghan Trainor (two each).

Ten other acts have each notched a week atop the Artist 100: 5 Seconds of Summer, Jason Aldean, Chris Brown, Zac Brown Band, Florida Georgia Line, Kendrick Lamar, Mumford & Sons, Tom Petty and the Heartbreakers, Blake Shelton and Trey Songz.

Meanwhile, 24 artists make the honor roll of acts that have ranked on each of the first 52 Artist 100 charts. Those with perfect attendance: Aldean, Iggy Azalea, Beyonce, Brown, Luke Bryan, Kenny Chesney, Drake, Eminem, Florida Georgia Line, Grande, Imagine Dragons, Maroon 5, Bruno Mars, Nicki Minaj, One Direction, OneRepublic, Katy Perry, Pitbull, Ed Sheeran, Shelton, Sia, Smith, Songz and Wiz Khalifa.

Breaking Benjamin Earns Its First No. 1 Album on the Billboard 200 Chart

Swift maintains the top perch on the Artist 100 despite a 4 percent decrease in activity, according to Nielsen Music. Rock band Breaking Benjamin soars in at No. 2, as its Dark Before Dawn launches at No. 1 on Top Album Sales with 135,000 copies sold. Album sales account for 99 percent of the group's Artist 100 standing.

The Weeknd dips 2-3 on the Artist 100, followed by Maroon 5 and Sheeran, which hold at Nos. 4 and 5, respectively.

Among other notable Artist 100 moves powered mostly by the chart arrivals of new albums, Tori Kelly re-enters at a new high of No. 6 and Kacey Musgraves debuts at No. 9. Plus, Selena Gomez zooms 71-17 (after reaching a No. 10 peak in December), fueled largely by the debut of her new single "Good for You" (featuring A$AP Rocky) atop the Digital Songs chart, with 179,000 downloads sold; on the Hot 100, it starts at No. 9. Gomez scales the Artist 100 with a 165 percent gain, and with the majority (59 percent) of her points owed to digital song sales.