The 10 most viewed YouTube videos in 2013

https://www.youtube.com/watch?feature=player_embedded&v=jofNR_WkoCE
https://www.youtube.com/watch?feature=player_embedded&v=4hpEnLtqUDg
https://www.youtube.com/watch?feature=player_embedded&v=qnydFmqHuVo
https://www.youtube.com/watch?feature=player_embedded&v=W6DmHGYy_xk
https://www.youtube.com/watch?feature=player_embedded&v=pfxB5ut-KTs
http://www.youtube.com/watch?v=M7FIvfx5J10&feature=player_embedded
https://www.youtube.com/watch?feature=player_embedded&v=z5Otla5157c
https://www.youtube.com/watch?feature=player_embedded&v=VlOxlSOr3_M
https://www.youtube.com/watch?feature=player_embedded&v=Zce-QT7MGSE
https://www.youtube.com/watch?feature=player_embedded&v=_6Au0xCg3PI