> The % of population engaged in agriculture as compared to pure consumers of agricultural produce. This is perhaps what msandford meant. The net number of agri

> The % of population engaged in agriculture as compared to pure consumers of agricultural produce. This is perhaps what msandford meant. The net number of agricultural workers 'producers' is rapidly declining due to higher yield 'jobs' off farm. This impacts output/acre significantly. That has not been the case. Yields have improved in lock-step with the decrease of farmers. This is largely due to improvements in farming equipment, better hybrids, transgenic traits and other technological improvements.