I've asked the same question myself of Rackspace support. They said:
... We are working on a new
stats system that will be customer
facing, however I do not have any firm
ETA on that project.
I was also looking for hourly stats on bandwith et al, and they could not do that either. They do have daily numbers, but you have to raise a ticket and have them send you a spreadsheet with them.
EDIT: I've just logged in today and have seen (in the menu under YourAccount/Reports) new per-billing cycle graphs of CloudSites stats for bandwidth, CC's, disk-space etc. I'm really not sure at all of the numbers that are shown there, but it's a start. No exporting of the numbers from there either that I can see on the page.