What will the average upload and download speed will be for a typical
home user using broadband in 5 years?

Interested in both wired (e.g. through cable) and wireless answers
(e.g. speeds through wimax)

A good answer might approach this a couple of different ways
E.g. 1) extrapolating from historical upload / download speeds (for
consumers)or 2) based on advances due to a migration to a certain
technology (e.g. fiber optics to the house).

BTW. I'm using this to work out the technical feasibility of letting
users uploading a large amount of their data to a website.

NB. This is for an average consumer - not someone paying a ton of
money for a business line.

I'm not interested in P2P protocols