Okay, so a week here or there. Maybe every other All-Star week so it's more like 2 weeks per year. Whatever is seen as a enough of a taste to entice Supporters. It's in everybody's interest to increase this number since more cash flow hopefully translates into more staff for developing the game and making it better.
Don't ask what sort of Chunks they are, you probably don't want to know. Blowing Chunks since Season 4!