Iceland, Norway, Switzerland, and Liechtenstein are not members of the European Union, but they do participate in the single market. There are 19 member states that have joined eurozone, a monetary union that only uses the Euro as currency. EU member states own 25% of the $317 trillion global wealth. They fall in second behind the United States' $98.2 trillion net wealth. 
 What else can you tell me about them? 
 Hi can you tell me about the European Union? 
 You're very welcome! 
 Thank you. Can you tell me about the Economy?
Iceland, Norway, Switzerland, and Liechtenstein are not members of the European Union, but they do participate in the single market. There are 19 member states that have joined eurozone, a monetary union that only uses the Euro as currency. EU member states own 25% of the $317 trillion global wealth. They fall in second behind the United States' $98.2 trillion net wealth.