It's hard to believe 2011 is already over halfway over!  Billboard.com has released the 20 biggest digitally downloaded albums AND singles for the year thus far:

First up is singles:

1 - E.T. - Katy Perry (feat. Kanye West) [4.12 million]

2 - Rolling in the Deep - Adele  [4.1 million]

3 - F--- You - Cee Lo Green [3.2 million]

4 - Born This Way - Lady Gaga [3 million]

5 - S&M - Rihanna [2.73 million]

6 - On the Floor - Jennifer Lopez (feat. Pitbull) [2.7 million]

7 - Just Can't Get Enough - Black Eyed Peas [2.5 million]

8 - Look at Me Now - Chris Brown (feat. Lil Wayne & Busta Rhymes) [2.44 million]

9 - Grenade - Bruno Mars [2.4 million]

10 - Firework - Katy Perry [2.3 million]

11 - Give Me Everything - Pitbull (feat. Ne-Yo) [2.2 million]

12 - Perfect - Pink [2.19 million]

13 - Blow - Ke$ha [2.16 million]

14 - I Need a Doctor - Dr. Dre (feat. Eminem & Skylar Grey) [2.07 million]

15 - The Lazy Song - Bruno Mars [2.06 million]

16 - The Show Goes on - Lupe Fiasco [2.05 million]

17 - Down on Me - Jeremih (feat. 50 Cent) [2.04 million]

18 - Till the World Ends - Britney Spears [1.99 million]

19 - Black and Yellow - Wiz Khalifa [1.96 million]

20 - Party Rock Anthem - L.M.F.

A.O. [1.8 million]