What is the market size for products and services in the United States?

Question

Specifically, what is the market size in the US for:
1. Physical Products
(ie: $x.xx/year)
2. Services
(ie: $x.xx/year)

Please cite your source.

Extra credit: What is The World market for products and services?

Answer 1

This is information you will need to pay a market research firm for. Here's a list of the major ones.

http://www.knowthis.com/research/majorfirms.htm