Daily In/Out traffic

[rovshango]

Dear All,

I need generate, to get daily "report" of total in and out traffic on WAN interface.
So that way I will now how much download/upload was for last 24 hours.

Bandwithd is heavy and it uses too much CPU%.

Thank you all in advance.

[rovshango]

Update:

Something like this (as en example):

Total (GB) 631.962
Total upload (GB) 75.233
Total download (GB) 556.729