I found some excellent data. Ookla has been empirically measuring upload and download speeds for over a decade and from all over the world, based on its speed test results:
http://explorer.netindex.com/mapsThe pricing information is lacking, however.
Price hasn't changed much over the years once people transitioned from dialup to broadband in many places.
Here is a breakdown I did elsewhere -
Except, keep in mind those speed are the total combined upload and download speeds so 31.94 Mbps average means 21.88MBps download and 9.86MBps upload in 12/2014 thus the situation is worse than what you are even suggesting.
When you look at many other countries the growth is much slower as well. I was deliberately taking one of the better case scenarios to be generous.
all these numbers I am citing are only considering Broadband as well, and not mobile which is much slower and with much lower soft caps.