Transmission

I'm running Transmission in daemon mode on a headless computer and using the web interface to acess it from another workstation. I'm trying to keep track of total upload/download traffic used by transmission (I have limited total traffic per month). However, I've looked at the logs and the wiki and I can't seem to find any means of getting this information. Is it possible with transmission? If, yes, how?

Thanks very much,
s0rce

found in stats.json thanks to Lacrocivious on IRC.

Does transmission also report the total value including overhead?