Sweet potato originates from North and South America, but its highest production is in China.
Sweet potato is usually grown for the sweet tasting tuberous roots. The young leaves and shoots are sometimes used as a leaf vegetable.
In 2010 the estimated world production of Sweet potatoes was 106,569,572 Metric Tons (source FAOSTAT). This corresponds to about 15 kg per person (in 2010 the world had about 6.9 billion persons).