Album with the fifth highest first week sales since 1991:

Oops! I Did It Again
Britney Spears "Oops! . . . I Did It Again" sold 1.32 million copies in its first week of release in 2000.
Source: USA Today, 4/1/2004

 
   
  Album with the fourth highest first week sales since 1991:

Black & Blue
The Backstreet Boys "Black & Blue" sold 1.76 million copies in its first week of release in 2000.
Source: USA Today, 4/1/2004

 
   
  Album with the third highest first week sales since 1991:

Marshall Mathers LP
Eminem's "The Marshall Mathers LP" sold 1.76 million copies in its first week of release in 2000.
Source: USA Today, 4/1/2004

 
   
  Album with the highest first week sales since 1991:

No Strings Attached
'N Syncs' "No Strings Attached" sold 2.42 million copies in the first week it was released in 2000.
Source: USA Today, 4/1/2004