As oil exponentially declines, so will population and food.

1994. Elaine M. Murphy. World Population: Toward the Next Century, © 1994 by the Population Reference Bureau, 1875 Connecticut Avenue, N.W., Suite 520, Washington, DC, 20009. Property of Population Reference Bureau, Inc.

2 Feb 2013. Paul Chefurka. How Tight is the Link Between Oil, Food and Population?
Food Shortages, Population, peak oil.

17 Nov 2003. Dale Allen Pfeiffer. Drawing Lessons from Experience; The Agricultural Crises in North Korea and Cuba — Part 1. From the wilderness

So what happens to an industrialized country practicing modern agriculture when it loses its fossil fuel energy base? There are two countries where it has already happened: North Korea and Cuba. Both countries have little or no oil resources of their own, both relied upon the Soviet Union for their oil imports, and both experienced a swift and severe drop in their oil imports following the demise of the Soviet empire.