Since I started tracking in late May, Japan has gotten 4, 10, 5, 4, 5, 6, 6, 6, 10, 6, 12, 18, 0, 10. That is an average of 7.28 games per week.
North America has gotten 4, 4, 4, 4, 4, 5, 5, 6, 6, 4, 4, 4, 4, 5, 3. Not counting this week (to be fair to the average), that is an average of 4.72 games per week
PAL regions have gotten 4, 3, 2, 4, 3, 5, 5, 5, 4, 5, 4, 2, 4, 5. That is an average of 3.93 games per week.