Generate a correctly punctuated version of the following text: In Greece pay with euros to Greece are in the EU Greece has been the EU since 1981 Greeces National Day is 25 March Athens has been important ever since 2500 years back
In Greece pay with euros to Greece are in the EU. Greece has been the EU since 1981. Greece's National Day is 25 March. Athens has been important ever since 2500 years back.