Zimbabwe's hyperinflation, began in February 2007. During the height of inflation from 2008 to 2009, it was difficult to measure Zimbabwe's hyperinflation because the government of Zimbabwe stopped filing official inflation statistics. However, Zimbabwe's peak month of inflation is estimated at 79.6 billion percent month-on-month, 89.7 sextillion (8.97*10²²) percent year-on-year in mid-November 2008.
In April 2009, Zimbabwe stopped printing its currency, and currencies from other countries were used.[2] In mid-2015, Zimbabwe announced plans to have completely switched to the United States dollar by the end of that year.
https://www.thereporterethiopia.com/37670/
https://borkena.com/2023/12/04/ethiopia ... -currency/
https://en.wikipedia.org/wiki/Hyperinfl ... n_Zimbabwe