This Week in Billboard Chart History: Ten Years Ago, Gwen Stefani's 'Hollaback Girl' Hit No. 1

Brian Friedman for iHeartRadio
Gwen Stefani performs onstage at Z100's 2014 Jingle Ball on Dec. 12 at Madison Square Garden in New York City.

In 2005, the No Doubt lead singer scored her only Hot 100 topper. Plus, remembering chart feats by Mariah Carey, Ricky Martin and Pet Shop Boys.

Your weekly recap celebrating significant milestones from more than seven decades of Billboard chart history.
 

May 4, 1996
How did Mariah Carey follow up the longest-leading hit in Billboard Hot 100 history? With another No. 1! After "One Sweet Day," with Boyz II Men, held the top spot for 16 weeks in 1995-96, "Always Be My Baby" ascended to the summit for a two-week command.

May 5, 1962
The West Side Story soundtrack began the longest rule in the Billboard 200's history: an incredible 54 weeks at No. 1. In the half-century since, Michael Jackson's Thriller (37 weeks, 1983-84) has come the closest to challenging the mark.

May 6, 1989
As Madonna's "Like a Prayer" spent its third and final week at No. 1 on the Billboard Hot 100, several eventual big hits entered the chart, led by Richard Marx's future No. 1 "Satisfied" at No. 39. Also new: Cyndi Lauper's "I Drove All Night" (No. 60), Fine Young Cannibals' "Good Thing" (No. 69) and Simply Red's "If You Don't Know Me By Now" (No. 81).
 

May 7, 2005
Ten years ago today, Gwen Stefani made her first and only trip to No. 1 on the Billboard Hot 100, as "Hollaback Girl" began a four-week reign. (Stefani might've topped the chart earlier, as her band No Doubt's "Don't Speak" led the Radio Songs chart for a whopping 16 weeks in 1996-97. But, since it was not commercially-available as a single, it was not eligible to chart on the Hot 100, per rules at the time.)

May 8, 1999
Sixteen years ago today, we were goin' crazy for Ricky Martin's "Livin' La Vida Loca," as the song began a five-week domination of the Billboard Hot 100.

May 9, 1998
The Titanic soundtrack sails to its 16th and final week at No. 1 on the Billboard 200. The following week, Dave Matthews Band's Before These Crowded Streets replaces Titanic at the summit.
 

May 10, 1986
They didn't work in a pet shop – and thankfully so, since they make pretty good musicians. Twenty-nine years ago today, England's Pet Shop Boys danced to No. 1 on the Billboard Hot 100 with their debut smash, "West End Girls."