In 2009, 5 million e-paper displays were shipped (up 417% from 2008)

DisplaySearch say that shipments of e-paper increased to 5 million units in 2009, up 417% on year from 950,000 units in 2008, mainly due to the popularity of e-book readers. The Amazon Kindle has 66% of the total e-paper market, which means that they sold 3.3 million units.