And it is relevant because the OP needs to know whether he will be likely to be allowed in, and that likelihood is dependent on both his travel history and whether he has a visa or not (plus other factors).
You definitely cannot be sure of being allowed to enter that often without a visa. Policy for some years now has been three visa-exempt entries per rolling six-month period. Oil-rig workers doing three-weeks-on / three-weeks-off shifts were being denied entry because of that. They hadn't spent a lot of days here ... they were just trying to enter every six weeks.
There is no regulation limiting the number of entries by air, but there is a policy to prohibit more than three visa-exempt entries per rolling six-month period.