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MELLENSEE, GERMANY - DECEMBER 12: Father Jens with his daughter Floris cut down a tree at a Christmas Tree Farm on December 12, 2010 in Mellensee near Berlin, Germany. According to the German timber industry association, Germans are expected to purchase about 29 million Christmas trees this season. Christmas is the most important holiday in Central Europe and many retailers depend on it for as much as half of their annual sales. (Photo by Andreas Rentz/Getty Images)

MELLENSEE, GERMANY - DECEMBER 12:  Father Jens with his daughter Floris cut down a tree at a Christmas Tree Farm on December 12, 2010 in Mellensee near Berlin, Germany. According to the German timber industry association, Germans are expected to purchase about 29 million Christmas trees this season. Christmas is the most important holiday in Central Europe and many retailers depend on it for as much as half of their annual sales.  (Photo by Andreas Rentz/Getty Images)