Between May of 1921 and May 1922, Germany experienced 634.6% inflation. Also, inflation isn't at 18% in the US. You look silly.
Inflation IS at 18% in the US.
Until you understand this, you can have no comprehension of economic reality in the US.
The official CPI is derived from carefully massaged Government figures. It is designed for consumption by the uncritical and to protect the government from index-linked obligations.
The official method of tracking Consumer prices has changed since 1980 with the deliberate intention of understating inflation.
If CPI is tracked using the same method that was used in 1980, the inflation rate is 18%.
Shadowstats.com maintains a record of CPI calculated with the 1980-method.
Go to the Shadowstats front page. Scroll down to the bottom chart. Read off the number for the end of 2023.
I highly recommend reading through the ShadowStats public comment on inflation measurement.
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The same chart that shows 18% inflation can be used to calculate a 10 yr moving average of year-on-year inflation of about 12%.
Compare this with the 10 yr average shown on this page. This will give you a stab at the 'which year in 1920's Germany are we in' metric. 1920? 1921? It's a dense abscissa and a steep curve, so you tell me.
Of course: the 'which year in 1920's Germany are we in' metric can only be of rhetorical use. The cases are not the same.
The US isn't flooding its own country with physical printed fiat: it has flooded the whole world with digital fiat.
We have never in all history seen an event like the upcoming American hyperinflation. Timing cues taken from the Papiermark are probably not meaningful. I imagine that - due to the speed of electronic communication - the collapse in the dollar will be far more sudden and devastating.