Recent statistics on this are hard to come by, but see Wright 6.

For a discussion of the differences among information production, format, and flow, see Ott 29–32. Information, as I am using here, refers simply to meaningful data; it should not be conflated with knowledge or assumed to be factually true.

These statistics vary greatly depending upon the source and method of calculation. But regardless of which numbers one prefers, researchers appear to agree that the volume of data being generated each year is growing exponentially. See von Baeyer 4.

See “In 2013” and Tweney.