bandwidth usage suddenly increased in wordpress site

I have the same problem.. Daily 9-10GB this is for stat for the last two days where I had 8.500 visits

jpg Image 845102 59.9 % 16.81 GB 76.5 %

I have a lot of images, that's right, but before update it wasn't like that.

I have check latest visitor URL images and js.

via Chebli Mohamed