I hope people realize that when monthly inflation numbers are released those are annualized.
So the 8.5% inflation rate in March is actually 1.085^(1/12) = 0.7% for March, and 8.5% assuming that same rate lasted for 12 consecutive months.
In 2021, the CPI-U was 4.7% for all of 2021.
https://www.minneapolisfed.org/about-us/monetary-policy/infl...