The introduction of the single currency less than nine years ago has led to an acceleration of financial integration by eliminating intra-zone exchange rate risk and achieving low and stable inflation.
So we cannot be complacent but I think, and this is quite relevant in the times that we are living now, the euro is the main instrument that we have in terms of political integration, in terms of financial integration and there is a lot of political will behind the single currency, so what I would expect is that more and more countries will eventually join the euro zone.