This is from Billboard magazine and its based only on monies derived from the sale of music.
1. Madonna: $242,176,466
2. Bon Jovi: $157,177,766
3. Bruce Springsteen: $156,327,964
4. The Police: $109,976,894
5. Celine Dion: $99,171,237
6. Kenny Chesney: $90,823,990
7. Neil Diamond: $82,174,000
8. Rascall Flatts: $63,522,160
9. Jonas Brothers: $62,638,814
10. Coldplay: $62,175,555
11. The Eagles: $61,132,213
12. Lil Wayne: $57,441,334
13. AC/DC: $56,505,296
14. Michael Buble: $50,257,364
15. Miley Cyrus: $48,920,806
16. Taylor Swift: $45,588,730
17. Journey: $44,787,328
18. Billy Joel: $44,581,010
19. Mary J. Blige: $43,472,850
20. Kanye West: $42,552,402