Indexes are available as far back as December 1993. Versions are available with or without cited sources. This impressive metasite of Internet-related survey information is overflowing with statistical reports. Survey information conducted by Nua and other independent surveys is available. Additional features include an index of graphs and charts, a year in review report, a bimonthly report, as well as an email alerting service to announce when new reports become available.
Net takes a slightly different approach with constantly running surveys on a variety of topics.
A plethora of interesting information, trends, and opinions can be found here. They do, however, actively promote filling out their surveys. This site will meet your needs. It collects and comments on academic research and commercial products that provide visual pictures of cyberspace. Graphics can include saturation of domain names, network traffic, graphic representations of Web sites and searches, and many more.