FILE PHOTO: U.S. dollar and Euro bank notes are photographed in Frankfurt, Germany, in this illustration picture taken May 7, 2017. Picture taken May 7, 2017. REUTERS/Kai Pfaffenbach/Illustration
FILE PHOTO: U.S. dollar and Euro bank notes are photographed in Frankfurt, Germany, in this illustration picture taken May 7, 2017. Picture taken May 7, 2017. REUTERS/Kai Pfaffenbach/Illustration