1. Britney Spears - Oops!... I Did It Again: 2,400,000
2. Norah Jones - Feels Like Home: 1,930,000
3. Lady Gaga - Born This Way: 1,921,000
4. Britney Spears - Britney: 1,625,000
5. Taylor Swift - RED: 1,459,000
6. Mariah Carey - #1's: 1,430,000
7. Susan Boyle - I Dreamed A Dream: 1,284,000
8. Taylor Swift - Speak Now: 1,149,000
9. Britney Spears - In The Zone: 1,110,000
10. Madonna - Confessions On A Dance Floor: 1,000,000
11. Alicia Keys - As I Am - 876,000
12. Britney Spears - Circus: 819,000
13. Avril Lavigne - The Best Damn Thing - 780,000
14. Madonna - Hard Candy: 758,000
15. Beyoncé - BEYONCÉ: 746,000
16. Madonna - MDNA: 740,000
17. Beyoncé - B'Day: 736,000
18. Christina Aguilera - Back To Basics: 721,000
19. Britney Spears - Greatest Hits: My Prerogative: 644,000
20. Beyoncé - I Am... Sasha Fierce: 633,000
Based off the list below (removing groups/male artists/local Japanese acts) and my personal re-search. I'm not too sure about the last 2 so if there's an album that sold more please let me know and I'll edit it.
Did your faves make it?
Sources:
http://atrl.net/forums/showthread.php?t=382448
http://www.mediatraffic.de/