Get ready to celebrate another milestone in Adele’s career because her ’21′ album has reached the border of a major accomplishment. The record has sold accumulated total US sales of 8.99 million copies and will surpass the 9 million sales mark next week!

Since being released in February 2011, ’21′ has been certified 9x platinum in the US and continues to race toward diamond statues. With 8.99 million copies sold in the US, of which 3.16 million was moved in 2012 alone, ’21′ is the best-selling album since Usher’s ‘Confessions’ in 2004.

Additionally, ’21′ is the only album to sell north of 1 million copies in the US in 2012, thus far. Its nearest competition are Whitney Houston’s ‘Whitney: The Greatest Hits’ and Lionel Richie’s ‘Tuskegee’, which have sold 765K and 679K copies this year.

Expect ’21′ to return to the top of the Billboard 200 next week for a 24th frame at the summit. Meanwhile, Nicki Minaj’s ‘Roman Reloaded’ has already exited the top 10 of the chart, despite just being released on April 3rd.

See the leading releases in the top 10 of both Billboard 200 and the Hot 100 below:

Billboard 200

1. Carrie Underwood - ’Blown Away’ – 267K (debut)

2. Norah Jones - ‘Little Broken Hearts’ – 110K (debut)

3. Various Artists – ‘Now 42′ – 95K (debut)

4. Adele – ’21′ – 77K (total: 8.99 M)

5. B.o.B. – ‘Strange Clouds - 76K (debut)

6. Lionel Richie – ‘Tuskegee’ – 64K (total: 679K)

7. Jack White – ‘Blunderbuss’ – 56K (total: 194K)

8. One Direction – ‘Up All Night’ – 45K (total: 586K)

9. Various Artists – ‘Smash’ – 39K (debut)

10. Marilyn Manson - ’Born Villain’ – 38K (debut)

 

Billboard Hot 100

1. Gotye’s – ‘Somebody That I Used to Know (Ft. Kimbra)’

2. fun. – ‘We are Young (Ft. Janelle Monae)’

3. Maroon 5 – ‘Payphone (Ft. Wiz Khalifa)’

4. Carly Rae Jepsen – ‘Call Me Maybe’

5. Flo Rida – ‘Wild Ones (Ft. Sia)’

6. The Wanted – ‘Glad You Came’

7. Nicki Minaj – ‘Starships’

8. Justin Bieber – ‘Boyrfriend’

9. One Direction – ‘What Makes You Beautiful’

10. Kelly Clarkson – ‘Stronger (What Doesn’t Kill You)’

Watch Adele’s entire concert at Royal Albert Hall below:

Thoughts?