> In the end, the researchers unearthed a total of 56 episodes of hyperinflation, many of them previously unreported in English-language works. It needs to be noted that the criterion used in their paper is very strict: a consumer price increase of at least 50% in a month. This excludes countries such as Israel, Vietnam, or Italy, even though they experienced many years of very steep inflation - and in the latter two cases, ended up with banknote denominations all the way up to 500,000.