The list views would pull in ALL transactions but if you purged through 2015 then most of the transactions prior to that would be gone.  I say most as not everything will be eligible to be purged as the transaction has to meet certain requirements in order for the system to remove it.  I really need to do some pre-purge prep of the data to maximize the purge results.  You can reach out if you need assistance running that.  [email protected]