[compumike]

For the mathematically inclined, here is a graph of 1/p over the past year:

https://totalrealreturns.com/s/USDOLLAR?start=2021-11-10&end...

or over a longer time period: https://totalrealreturns.com/s/USDOLLAR

(this site is my side project)

If "p" is the relative price level index (CPI-U in this case), then "1/p" represents the relative purchasing power of a single dollar over time -- explained on homepage in more detail.