Originally Posted by copywriter
Robert, didn't you have an article about this?
Yep, there are a couple that provide some stats (although not all requested):
Study: November online sales up 19 percent:
On a non-adjusted year-over-year basis, the U.S. Department of Commerce reported that e-commerce sales grew by 21.2 percent:
I think Bill's link above will lead you to the first study.