Interestingly, the average (75.25 days) is pretty close to the latest time period, between 1.3 and 1.4. (76 days)
In turn, the current wait (71 days as of me writing this) is pretty close to both of those numbers.
Would I be surprised to see it go 80 or 90 days in between this time? No.
Would I be surprised to see it go 154 or more days (time between 1.0 and 1.1) in between this time? Yes.
If nothing else, looking at the wait times has given me an upper bound on what I would consider normal.