LEVERKUSEN, GERMANY - NOVEMBER 06:  A can of milk is emptied at the farm Baumhoegger-Wieden of farmer Klaus Wieden on November 6, 2008 in Imbach near Leverkusen, Germany. Big discounters like Aldi and Lidl lowered prices due to the actual economic crisis.  (Photo by Christof Koepsel/Getty Images)