Probably. We have a lot of graphical web views within (and occasionally outside) FileMaker Pro that do a lot of summarization of daily data points, and a quarter of our users are looking at these throughout each day. They are PHP calls that use an FM script calling ExecuteSQL and returning the results that are then parsed and charted in AMCharts or other software.
We also have several nightly processes that take data out, perform calculations in PHP, and update static summary fields on records (like worked time on an episode and on each episode task). I'd imagine that we might do between 100GB and 1TB of data transfer in a month through PHP calls, but since we're not logging total output length, I can't say for sure.