500 euro note supply of euro notes and to maintain their integrity throughout the euro area. The €500 banknote peaked at the end of March 2009 at 36.9% of the value of all Euro banknotes.Circulation by numbers of notes peaked at 613,559,542 banknotes in December 2015 when the decision to not include this denomination in the new Europa series was made. The lowest number of €500 banknotes in recent years is, 507,033,274 in February 2018. Besides the date of the introduction of the first set to January 2002, the publication of figures is more significant through the maximum number of banknotes raised each
Bulgaria and the euro banknotes. The second series of notes (beginning with the €5 note issued from 2013) includes the term "ЕВРО" and the abbreviation "ЕЦБ" (short for "Европейска централна банка", the Bulgarian name of the European Central Bank). The first series had only the standard Latin alphabet "EURO" and the Greek "ΕΥΡΩ". The euro coins only have the Latin "EURO" on their common side. Greek coins include the alternative Greek spelling on the national (obverse) side. Bulgarian coins, therefore, may follow suit, having "EURO" on one side and "ЕВРО" on the other. The plural of евро in Bulgarian varies in spoken language –