"...According to Apple, more than 315 million iOS devices have sold as of Jan. 24. Apple's cloud-based music service iCloud with iTunes Match launched in November, and has garnered 85 million users. There are now 225 million active iTunes users and 20 million songs on iTunes. Users have downloaded 16 billion songs from iTunes, and Christmas Day 2011 alone saw more than 140 million downloads from iTunes. (Source: Billboard)..."
I wonder if these numbers are US only though....?