Yes, Pirate Chain’s supply was inflated 5x from 40,000,000 to 200,000,000. This change occurred on September 23, 2018. Prior to this change, around the first 30k blocks and approximately 20% of ARRR’s original 40 million supply was mined in several weeks after launch at extremely low hash rate. Along with inflating supply, this 5x increase of the halving schedule deaccelerated halving from every ~54 days to every ~270 days.
According to Satinder Grewal, this was done to incentivize more miners to mine Pirate and increase the network hash rate. Pirate Chain’s original asset chain parameters were the following:  -ac_name=PIRATE -ac_supply=0 -ac_reward=25600000000 -ac_halving=77777 -ac_private=1 -addnode=136.243.102.225  These parameters still exist today as the 5x was a code change by jl777 to ASSETCHAINS_HALVING. There is nothing stopping Pirate devs from further increasing this 5x inflation in the future and is a likely possibility if the hash rate continues to drop after future halvings.