Coming in at No. 2 on the Billboard Hot 100 is Pitbull's "Give Me Everything" featuring Ne-Yo, AfroJack and Nayer, followed by Katy Perry's "E.T." featuring Kanye West at No. 3, Jennifer Lopez's "On the Floor" featuring Pitbull at No. 4 and the Black Eyed Peas' "Just Can't Get Enough" at No. 5.
Rounding out the top tier are Bruno Mars' "The Lazy Song" at No. 6, Britney Spears' "Till the World Ends" at No. 7, Lady Gaga's "Born This Way" at No. 8, LMFAO's "Party Rock Anthem" featuring Lauren Bennett and GoonRock at No. 9 and DJ Khaled's "I'm on One" featuring Drake, Rick Ross and Lil Wayne at No. 10.
Notable deaths of 2014 [PHOTOS]
S Club 7 to reunite for BBC charity event