01. Rihanna: 23,352,000
02. Pitbull: 20,542,000
03. Bruno Mars: 20,199,000
04. Adele: 19,625,000
05. Katy Perry: 17,108,000
06. Lady Gaga: 15,533,000
07. David Guetta: 12,893,000
08. LMFAO: 12,490,000
09. Britney Spears: 10,095,000
10. Black Eyed Peas: 8,896,000
11. Nicki Minaj: 8,154,000
12. Jennifer Lopez: 7,856,000
13. Maroon 5: 7,792,000
14. Usher: 6,818,000
15. Kanye West: 6,778,000
16. P!nK: 6,557,000
17. Lil Wayne: 6,344,000
18. Flo Rida: 5,663,000
19. Chris Brown: 5,210,000
20. Drake: 5,091,000
21. B.O.B: 5,015,000
22. Calvin Harris: 4,932,000
23. Taio Cruz: 4,905,000
24. Jessie J: 4,721,000
25. Coldplay: 4,650,000
26. Wiz Khalifa: 4,417,000
27. Ke$ha: 4,235,000
28. AKB 48: 4,195,000
29. Enrique Igelsias: 4,083,000
30. Cee-Lo Green: 3,661,000
31. Foster The People: 3,494,000
32. Beyonce: 3,138,000
33. Gym Class Heroes: 3,072,000
34. Diddy Dirty Money: 3,026,000
35. Eminem: 2,888,000
36. T-Pain: 2,832,000
37. Far East Movement: 2,771,000
38. Avril Lavigne: 2,732,000
39. Dev: 2,622,000
40. Bad Meets Evil: 2,615,000
Data pulled from:
http://www.mediatraffic.de/
To be included, an artist must have had at least one entry chart as the main artist this year.