Breakdown of Bandwidth Stats for Previous Months

Howdy,

I'd love to be able to get a per-server and sub-server breakdown of bandwidth usage for previous months, in the bandwidth graph within the Virtualmin.

I see how I can get the sub-server breakdown of bandwidth for *this* month.

And I see how I can get a per-server breakdown of bandwidth of previous months.

But I don't believe I see a way to obtain a sub-server breakdown for previous months.

Basically, now that Sep 1 hit, my customers don't have a simple way to tally what sub-server used up what amount of bandwidth for the month of Aug.

Sure, they could go to the /stats/ page for each site, but once you've got more than 2-3 sites (one of these guys has nearly 20!), that gets kind of old ;-)

Thanks!
-Eric