This number is entirely meaningless.
Is a phone conversation "consumed" as its transcript (a few hundred bytes) or as an audio file (a few hundred kb) or a really well sampled audio file that conveys nuance perfectly (a few Mb)?
A tweet is 140 characters, but if I were to take a screenshot of a screen with Twitter (and about 20 tweets) that could be a couple of Mb.
And much of that "data" could be compressed in a meaningful way. I spend most of my day in my cubicle staring at my monitor. Does all of the visual data that my eyes are receiving (about eight hours' worth of grey walls and a small computer monitor's contents) count?