The smash reigns for a 15th week, the most on the chart since 2007.

After becoming Panic! at the Disco's highest-charting Billboard Hot 100 hit, reaching No. 4 in January, the Brendon Urie-led act's "High Hopes" is now the sole longest-leading No. 1 on the Adult Pop Songs radio airplay chart this decade, as it leads the latter list (dated March 30) for a 15th week.

"Hopes," which became Panic's first Adult Pop Songs No. 1 in December, breaks a tie with Maroon 5's "Girls Like You" (featuring Cardi B), which ruled for 14 weeks in 2018. The reign of "Hopes" is the chart's longest since The Fray's "How to Save a Life" also led for 15 weeks in 2006-07.

The overall No. 1 longevity record on Adult Pop Songs belongs to Santana's "Smooth" (featuring Rob Thomas): 25 weeks at No. 1 in 1999-2000.

Longest-Leading Adult Pop Songs No. 1s

25 weeks, "Smooth," Santana feat. Rob Thomas, beginning Oct. 23, 1999

23, "Wherever You Will Go," The Calling, Dec. 22, 2001

18, "Photograph," Nickelback, Oct. 29, 2005

18, "Unwell," matchbox twenty, May 3, 2003

17, "Iris," Goo Goo Dolls, Aug. 1, 1998

16, "Complicated," Avril Lavigne, Aug. 3, 2002

15, "High Hopes," Panic! at the Disco, Dec. 8, 2018

15, "How to Save a Life," The Fray, Nov. 4, 2006

15, "Don't Speak," No Doubt, Dec. 28, 1996

The Adult Pop Songs chart, which began in Billboard's pages in March 1996, measures total weekly plays, as tabulated by Nielsen Music, among its reporting panel of 85 adult top 40 stations.

Meanwhile, "Hopes" follow-up "Hey Look Ma, I Made It" rises 25-21 on Adult Pop Songs.

All charts will update tomorrow (March 26) on Billboard.com.