A friend showed me Minitel in 1994, and I was half-surprised, half-not-surprised that even on this entirely text-based system, there was still porn (or at least, "visual erotica"). Human nature, eh?
It's close if you count it in francs, and include all services. This article [0] says that France Telecome gave 700 M FRF to the operators, which means that 1,050 M FRF were collected in 1986 alone.
