Multiple Tracking Codes one Domain

I am setting up a service for my clients where each of them will have a subfolder my domain. I'd like to be able to offer them unique stats for their service. This would require a different tracking code for each subfolder. I'd love to be able to assign a different user for each folder, but for now I can run the reports for them. In this case due to shared code in the root folder, subdomains won't work.

Is it possible to have separate stats from multiple folders on one domain?

Thank you!
Rob