Mumford & Sons, fun., and Gotye were among the leading 2013 Grammy nominees announced last month. Not surprisingly, their success has been quantified on the economic side as Billboard looks back at 2012 with analysis of record sales and industry trends.

Gotye's "Somebody That I Used To Know" sold 6.8 million singles to take the crown as 2012's top song.

fun. came in third with 5.95 million downloads of "We Are Young."

Mumford & Sons ended 2012 much the same as 2011 - among the top 10 albums of the year:

Mumford & Sons' "Babel" is 2012's fourth-biggest album, with 1.46 million -- thus ranking as the year's biggest rock set. It's the only rock effort in the top 10 this year. It's familiar territory for the quartet, as they claimed the No. 6 album of 2011 with "Sigh No More" (1.42 million) and was the only rock title in that year's top 10.

In terms of the industry as a whole, full album sales were down again (4%) in 2012. Decreases in physical sales (down 13%) more than offset record digital album sales (14%). Digital sales comprise 37% of all album sales - another record to date. Single-song digital sales are also continue to break new records year-over-year.

More interesting is what Billboard had to say about the continued resurgence of vinyl:

For the fifth consecutive year, more vinyl albums were sold than in any other year since SoundScan launched in 1991. In 2012, 4.55 million vinyl LPs were sold -- up 18% compared to 2011's then-record haul of 3.87 million. 67% of all vinyl albums sold in 2012 were purchased at an independent music store (the same share as in 2011). 76% of the vinyl LPs sold in 2012 were a rock album.

The year's top selling LP was Jack White's "Blunderbuss" with 34,000 vinyl sets sold. In second place was the Beatles' "Abbey Road" with 30,000. While overall LP sales were up, the top seller of 2012 sold less than the top seller of 2011. Last year, the biggest vinyl album was "Abbey Road" with 41,000.

Finally, Adele made dubious history by ruling album sales by ringing up 4.41 million copies of 21 - the first release to sell the most copies two years running. Is this a statement about the quality of music in 2012?