Well, the last OP2W started Aug 10th -till May 8th but not a knife every week, but a lot of them. As for knives- depends on how you count them - I say roughly 48 different ones but many flavors of some. Both CG and BG and LE of the same ones (I counted those as 1)
But to seriously answer the question all I have to say is - "It's Jerry's world, and he lets us hang out in it"