Page "Data storage device" Paragraph 14

It is estimated that the year 2002 marked the beginning of the digital age for information storage, which means that this years marked the date where human kind started to store more information on digital, than on analog storage devices.

In the year 1986, merely 1 % of the world's capacity to store information was in digital format, which grew to 3 % by 1993, 25 % in the year 2000, and exploded to 97 % of the world's storage capacity by 2007.