Prevalence of undernourishment (%) in developing countries since 1970, 1970 to 2015

This is the main FAO hunger indicator. It measures the share of the population that consumes an amount of calories that is insufficient to cover the energy requirement
for an active and healthy life (as defined by the minimum dietary energy requirement). Data from 1990 onwards is well-established within FAO estimates. Earlier
estimates extending the period 1970-1989 are significantly more uncertain.