the year. The figures are as follows: On 28 May 2019, a new 'Europe' series was issued. The first series of notes were issued in conjunction with those for a few weeks in the series 'Europe' until existing stocks are exhausted, then gradually withdrawn from circulation. Both series thus run parallel but the proportion tends inevitably to a sharp decrease in the first series. The latest figures provided by the ECB are the following : Legal information Legally, both the European Central Bank and the central banks of the eurozone countries have the right to issue the 7 different euro banknotes. In practice, only the national central banks of the zone physically issue and withdraw euro banknotes. The European Central Bank does not have a cash office and is not involved in any cash operations. Tracking There are several communities of people at European level, most of which is EuroBillTracker, that, as a hobby, it keeps track of the euro banknotes that pass through their hands, to keep track and know where they travel or have traveled. The aim is to record as many notes as possible in order to know details about its spread, like from where and to where they travel in general, follow it up, like where a ticket has been seen in particular, and generate statistics and rankings, for example, in which countries there are more tickets. EuroBillTracker has registered over 176 million notes as of May 2018, worth more than €3.257 billion. References External links Euro banknotes One-hundred-base-unit banknotes