Unless you just woke up from a coma after taking an interstellar trip on the Prometheus spaceship you probably noticed that Adele has been killing it on the charts this year. In fact, at the mid-way point of 2012, according to Nielsen SoundScan the singer's unstoppable 21 , which came out in the beginning of 2011, is the best seller of 2012 so far.

Through the sales week ending on July 1, Nielsen SoundScan reports that the disc has sold 3.69 million copies, making it the only disc this year that has sold more than one million. Wayyyy behind is the year's surprise #2, veteran R&B singer Lionel Richie's country duets album Tuskegee (912,000), followed closely by One Direction's Up All Night (899,000), a greatest hits collection from the late Whitney Houston (818,000) and the NOW 41 hits compilation (714,000).
Rounding out the top 10: Carrie Underwood, Blown Away (602,000), Luke Bryan, Tailgates & Tanlines (575,000), Nicki Minaj, Pink Friday: Roman Reloaded (557,000), Drake, Take Care (549,000) and Adele's debut, 19 (539,000). Other notable albums in the top 20 include: Justin Bieber, Believe (#12, 490,000), Madonna's MDNA (#13, 484,000), Black Keys, El Camino (#16, 424,000) and Rihanna's Talk That Talk (#17, 424,000).