World food production INDEX shows a 43% increase per capita between 1970 and 2011, and a 26% increas
To get to Food Production Indices go to FAOSTAT. http://faostat.fao.org/site/612/DesktopDefault.aspx?PageID=612#ancor Then select: Production indices
For 1970 input: World + (Total), 1970, Food (PIN) + (Total), Net per capita Production Index Number (2004-2006=100) = 76.85
for percent increase between 19770 and 2011 109.62 - 76.85 = 32.77 32.77 / 76.85 = 0.43 or 43% increase since 1970
For % increase from 1990 to 2011: 1990 = 86.89 2011 109.62. Difference 22.73 (26% INCREASE between 1990 and 2011)
For 2011 input: World + (Total) , 2011, Food (PIN) + (Total), Net per capita Production Index Number (2004-2006=100) as of August 11, 2013 FAO changed to 109.62)
FAOSTAT, Production Indices, http://faostat.fao.org/site/612/DesktopDefault.aspx?PageID=612#ancor
[verified 4/17/14]