Demographics of unix.com users

I notice that at certain times (evenings, Europe) and (more understandably) weekends the forums go slightly quiet. This got me thinking about where people who visit live.

Is there anything that shows a breakdown of the demographic unix.com community?

I remember an old thread some time back where they gave a break down by ip address and region.

The attached image shows the top ten countries over the past 30 days.