fun.'s "We Are Young," featuring Janelle Monae, spends a third week atop the Billboard Hot 100, while Flo Rida jumps into the chart's top 10 with the assistance of pop singer/songwriter Sia.

"Young" logs a fifth week at No. 1 on the Hot Digital Songs chart with 349,000 downloads sold (up 8%), according to Nielsen SoundScan. With the sum, the song passes 2 million in digital sales since its release.

fun.-Tastic! 'We Are Young' Tops Hot 100

On Hot 100 Airplay, "Young" bounds 19-14 with 65 million audience impressions (up 40%), according to Nielsen BDS, granting the song the Hot 100's top Airplay Gainer award for a third consecutive week.

As announced last week, streaming data now carries a greater weight on the Hot 100 with the addition of the newly-launched On-Demand Songs chart. Streaming figures continue to help keep "Young" at the Hot 100's summit, as the song, which crowns On-Demand Songs for a second week, drew 1.1 million on-demand streams in the chart's tracking week, according to BDS.

Flo Rida, meanwhile, boasts the Hot 100's lone new top 10 title, as "Wild Ones," featuring Sia, surges 12-9. The track gains on all three Hot 100 chart components: Hot Digital Songs (No. 6; 158,000, up 5%), Hot 100 Airplay (35-29; 39 million, up 17%) and On-Demand Songs (18-11; 429,000, up 22%).

"Wild" marks the Sunshine State rapper's seventh Hot 100 top 10 (all in lead roles). The song follows his No. 3-peaking "Good Feeling." Both cuts preview Flo Rida's forthcoming fourth album, Only One Rida (Part 2). The Australian-born Sia (last name: Furler) scores her first Hot 100 top 10. (She made mainstream inroads as far back as 2005 when her haunting track "Breathe Me" accompanied the closing scenes of the last episode of HBO's "Six Feet Under.")

Below "Young," the same songs as last week populate the Hot 100's top five.

Kelly Clarkson's former three-week No. 1 "Stronger (What Doesn't Kill You)" holds at No. 2. The song bullets at No. 2 on Hot 100 Airplay (118 million, up 1%) while dipping 3-5 on Hot Digital Songs (162,000, down 2%). It ranks at No. 8 on On-Demand Songs with 462,000 streams (up 5%).

The Wanted's "Glad You Came" advances 4-3 on the Hot 100, courtesy of a No. 2 rank on Hot Digital Songs (183,000, down 4%) and a 13-7 jump on Hot 100 Airplay (73 million, up 13%). The boy band's debut single rumbles 7-4 on On-Demand Songs (570,000, up 21%).

Adele's former two-week No. 1 "Set Fire to the Rain" descends 3-4 on the Hot 100 and Gotye's "Somebody That I Used to Know," featuring Kimbra, bullets at No. 5 for a second week. The collaboration, which tops Alternative for a fifth week, climbs 5-4 on Hot Digital Songs (166,000, up 8%) and 45-36 on Hot 100 Airplay (36 million, up 21%). "Somebody" remains at No. 2 on On-Demand Songs (778,000).

Nicki Minaj's "Starships" rebounds 9-6 on the Hot 100, returning to its peak position to date and showing gains in all Hot 100 measurement fields. The song rises 4-3 on Hot Digital Songs (172,000, up 6%), 31-21 on Hot 100 Airplay (41 million, up 12%) and 13-10 on On-Demand Songs (440,000, up 19%).

The advance of "Starships" pushes back David Guetta's "Turn Me On," featuring Minaj, 6-7 on the Hot 100, along with Drake's "Take Care," featuring Rihanna (7-8).

Below Flo Rida's "Wild," Katy Perry's "Part of Me" rounds out the top 10, holding at No. 10 for a second week. It's the first time that it hasn't fallen since it debuted at No. 1 four weeks ago. "Part" breaks into the Hot 100 Airplay top 10 (11-6; 74 million, up 13%) and elevates 41-34 on On-Demand Songs (260,000, up 31%). The song drops 7-10 on Hot Digital Songs (114,000, down 8%) but could yet rebound on the Hot 100; it opened atop the Hot 100 due to strong initial sales but strong airplay gains are now offsetting its sales erosion. Next week's release of Perry's "Teenage Dream: the Complete Confection" should additionally enhance the song's profile and future chart potential.

Check tomorrow (March 22), when all rankings, including the Hot 100, Hot Digital Songs, Hot 100 Airplay and On-Demand Songs, will be refreshed, as they are each Thursday.