I don't think inflation ever goes down; it just becomes the new normal
— just like with Diesel prices after the Ultra-Low Sulfur Diesel (ULSD) mandate.
The reason I believe this is due to the fact of the Federal Reserve and its fiat currency; by expanding the money-supply it dilutes your spending-power, robbing you of real wealth and, as wealth cannot really be destroyed but merely transferred, it's obvious that these wealth-transfers are benefiting someone; this someone has a vested interest in not reversing the wealth-transfer.
Gibesmedats?