One of the earliest methods of measurement was the Indian Famine Codes developed by the colonial British in the 1880s. The Famine Codes defined three levels of food insecurity: near-scarcity, scarcity, and famine. "Scarcity" was defined as three successive years of crop failure, crop yields of one-third or one-half normal, and large populations in distress. "Famine" further included a rise in food prices above 140% of "normal", the movement of people in search of food, and widespread mortality. The Punjab Food Code stated, "Imminence of death is the sole criterion for declaration of famine.". Inherent in the Famine Codes was the assumption that famine was an event, and not a process.