Well, I dont know how much I had last month with the two BSOD messages that I got that ruined the header of the logfile and made it so the program refused to open it.. but, for May, it says:
16.107GB Upload+Download
Now, I must admit, I do a lot of file transfers from my computer to my server and vice verse, which, isnt external internet, but, still, its bandwidth.
I can transfer 20GB through my ISP monthly, they charge you a little extra if you go over, but, I honestly dont think they check it.
652MB so far transferred for the month of April