We're using more paper, but is it less per task?

Nobody would say that we are using less paper now that computers are everywhere: we tend to use more of it, for whatever reasons. The question I would like to ask is how much paper are we using now for the amount of work we get done, vs the pre-computer era? If we are getting more done with less paper per task, then in a way we have reduced the amount of paper being used. The confounding factor is that it's more paper overall, but less per task - a relative decrease in paper coupled with an absolute increase in work.

Mokalus of Borg

PS - There would be a distinct drop in the amount of paper being mailed around.
PPS - I imagine the question as a whole would be hard to answer.