Consider this:
In 1986 Kodak created the first megapixel sensor that was capable of a photo quality 5 x 7 print. In 1990, Adobe introduced PhotoShop for the MAC and Kodak developed the Photo CD System with the new JPEG file format. The consumer market began in 1994 when Apple introduced the short-lived Quick Take 100 digital camera.
And now the numbers:
50 billion pictures taken in 2007
6.9 billion digital prints ordered in 2006
67% of American households own a digital camera in 2006
1 billion camera phones were sold in 2007 (first introduced in 2000)
82 million digital cameras sold in the US in 2007
11% of Americans have more than 10,000 digital images