764,448

Book titles produced by self-publishers and micro-niche publishers
in the U.S. in 2009, more than doubling 2008’s output

288,355

Book titles produced by traditional publishers
in the U.S. in 2009, 1,374 fewer than in 2008

$11,930,000,000

Physical music sales worldwide in 2009, down 13 percent
from 2008, which was down 15 percent from 2007

$4,300,000,000

Digital music sales worldwide in 2009, up 10 percent from
2008 and more than 10 times the digital market value in 2004

234,000,000

Number of Web sites at the end
of 2009, up 47 million from 2008

1,730,000,000

Internet users worldwide
as of September 2009

82%

Percentage of Internet users
who view videos online

WorldCat statistics | Contents