TWRoO on 29 December 2008
Try this:
http://vgchartz.com/hwcomps.php?cons1=GC®1=All&cons2=PS2®2=All&cons3=XB®3=All&start=38963&end=39803&weekly=1
Hover your mouse pointer over the ends of each line.... the PS2 is still selling, which is why it's line goes to the end.