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1996 6 1225-40 2001 24 381-92 2000 15 2 2 74‒97 1998 4th 2013 66 348-55 2005 58 119-27 2013 66 19-25 2004 2002 29-41 1994 2000 22 171-89 2011 6th Instituto Nacional de Estadística y Geografía 2002 2015 31 251-64 2010 12 3935-48 2001 49 695-710 1998 2002 131-45 2003 15 1 1 2006 2 51 51 2013 181 188-94 2000 44 213-27 Statistical Analysis System 1999 2000 53-66 1990 2008 72 392-400 2011 237-56 2010 Mekelle, Ethiopia 157-65