Metallica's 'Metallica' has remained the biggest selling album of the SoundScan era.
SoundScan started measuring music sales in 1991.
The entire Top 10 best sellers of the SoundScan era remains unchanged for 2010.
The Metallica album has now sold 15,620,000 units since SoundScan started business with 120,000 sales in the past year.
It is slightly in front of Shania Twain's 'Come On Over'
The Top 10 selling albums of the SoundScan era are:
1. Metallica ' Metallica (15,620,000)
2. Shania Twain ' Come On Over (15,487,000)
3. Alanis Morissette ' Jagged Little Pill (14,642,000)
4. Backstreet Boys ' Millennium (12,109,000)
5. Soundtrack ' Bodyguard (11,815,000)
6. Santana ' Supernatural (11,687,000)
7. The Beatles ' 1 (11,584,000)
8. Creed ' Human Clay (11,547,000)
9. N Sync ' No Strings Attached (11,113,000)
10. Celine Dion ' Falling Into You (10,781,000)