Eurozone Fast Facts

CNN Editorial Research

Updated 1832 GMT (0232 HKT) January 13, 2021

The leaders of Germany and France, Angela Merkel and Francois Hollande, are struggling to keep the European Union -- and the euro -- together in the face of the eurozone crisis.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – The leaders of Germany and France, Angela Merkel and Francois Hollande, are struggling to keep the European Union -- and the euro -- together in the face of the eurozone crisis.
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While the idea of European unity goes back centuries, today's EU has its foundations in the post-WWII years, when politicians were determined to prevent such conflict from breaking out again.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – While the idea of European unity goes back centuries, today's EU has its foundations in the post-WWII years, when politicians were determined to prevent such conflict from breaking out again.
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French politician Robert Schuman is regarded as one of the founding fathers of the European Union -- he came up with the idea for its precursor, the European Coal and Steel Community.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – French politician Robert Schuman is regarded as one of the founding fathers of the European Union -- he came up with the idea for its precursor, the European Coal and Steel Community.
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The ECSC, which came into being with the signing of the Treaty of Paris, on 18 April 1951, was designed to make war between France and Germany "not merely unthinkable, but materially impossible."
Photos: Why unity is so important to Europe
Why unity is so important to Europe – The ECSC, which came into being with the signing of the Treaty of Paris, on 18 April 1951, was designed to make war between France and Germany "not merely unthinkable, but materially impossible."
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The 1957 Treaty of Rome created the European Economic Community, under which the partner nations attempted to harmonize a raft of other policies, from agriculture and fisheries to monetary policy.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – The 1957 Treaty of Rome created the European Economic Community, under which the partner nations attempted to harmonize a raft of other policies, from agriculture and fisheries to monetary policy.
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Over the decades, the EEC became the European Union, and expanded from the original six nations to today's 27 members, from Finland in the north to Malta in the south.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – Over the decades, the EEC became the European Union, and expanded from the original six nations to today's 27 members, from Finland in the north to Malta in the south.
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Seventeen of the 27 EU members are also part of the eurozone, sharing the single European currency, the euro, which was launched on 1 January 1999. Euro coins and banknotes were introduced three years later.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – Seventeen of the 27 EU members are also part of the eurozone, sharing the single European currency, the euro, which was launched on 1 January 1999. Euro coins and banknotes were introduced three years later.
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But the global economic crisis has caused major financial headaches for many member nations, sparking disunity and leading to fears Greece may become the first nation to pull out of the euro.
Photos: Why unity is so important to Europe
Why unity is so important to Europe – But the global economic crisis has caused major financial headaches for many member nations, sparking disunity and leading to fears Greece may become the first nation to pull out of the euro.
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(CNN)Here's a look at the eurozone. Nineteen countries in the European Union use the euro as their currency, and comprise the eurozone.

Facts

The countries in the eurozone as of 2020 are: Austria , Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, The Netherlands, Portugal, Slovakia, Slovenia and Spain.
    January 1, 1999 - The euro is introduced.
      The European Union's Maastricht Treaty "convergence criteria," or requirements for a member country to use the euro as currency:
      - Annual budget deficits must not exceed 3% of gross domestic product.
      - Public debt must be under 60% of gross domestic product.
      - The country must have exchange rate stability.
      - Inflation rates must be within 1.5% of the three EU countries with the lowest rate.
      - Long-term interest rates must be within 2% of the three lowest interest rates in the EU.
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      Denmark doesn't use the euro, and is not required to be a part of the eurozone.
      Sweden does not belong to the eurozone but must join in the future, according to the terms of the treaty.
      Bulgaria, Czech Republic, Hungary, Poland, Croatia and Romania belong to the EU, but do not currently meet the criteria for joining the eurozone.
      Eurozone financial indicators

      Timeline

      February 1992 - The Maastricht Treaty (officially - The Treaty on Euro