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BERLIN, GERMANY - NOVEMBER 12: Professor of Economics Peter Bofinger , German Economy Minister and Vice Chancellor Sigmar Gabriel, German Health Minister Hermann Groehe, German Chancellor Angela Merkel and Christoph M. Schmidt, President of Rheinisch-Westfaelisches Instituts fuer Wirtschaftsforschung, (L-R) attend the presentation of the annual report of the economic experts of German government (Sachverstaendigenrat) in chancellery on November 12, 2014 in Berlin, Germany. (Photo by Michael Gottschalk/Photothek via Getty Images)

BERLIN, GERMANY - NOVEMBER 12: Professor of Economics Peter Bofinger , German Economy Minister and Vice Chancellor Sigmar Gabriel, German Health Minister Hermann Groehe, German Chancellor Angela Merkel and Christoph M. Schmidt, President of Rheinisch-Westfaelisches Instituts fuer Wirtschaftsforschung,  (L-R) attend the presentation of the annual report of the economic experts of German government (Sachverstaendigenrat) in chancellery on November 12, 2014 in Berlin, Germany. (Photo by Michael Gottschalk/Photothek via Getty Images)