Africa's net per capita food production increased 20% from 1990 to 2011; and the world's, 2
Caveat: 15% increase for whole of Africa 1961 and 2011.
FAOTSTAT "countries country codes item item codes element element codes 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Africa + (Total) 5100 Food (PIN) + (Total) 2054 Net per capita Production Index Number (2004-2006 = 100) 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 85.93 90.01 87.1 87.68 87.63 86.08 92.57 89.78 91.79 93.44 92.23 92.1 94.15 97.51 98.15 99.69 102.16 98.91 102.7 101.36 103.6 103.41 AFRICA 103.41 - 85.93 = 17.48 or 20% INCREASE COMPARE TO WORLD: 1990 = 86.89 ; 2011= 109.62 DIFFERENCE: 22.73, INCREASE 26%"
FAOSTAT Production Indices Food (PIN), Net per capita Production Index (accessed 8.11.13) [verified 4/15/14]