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Re:The U.S. Isn’t Prepared for the Next Recession by daxorid on Wednesday November 01, 2017 @09:30AM (#15600929)
17% is a little high, but I'm guessing the GP is referring to 1980:

https://en.wikipedia.org/wiki/Early_1980s_recession#Inflatio...

Re:The U.S. Isn’t Prepared for the Next Recession by Retric on Wednesday November 01, 2017 @10:20AM (#15601321)
Annual inflation capped at "1980 soared to 13.5%", but the inflation rate spiked above that in the same year.

http://www.usinflationcalculator.com/inflation/historical-in... lists a peak of 14.8% but if have seen 17% elsewhere.

1917-1920 had some periods over 20%.