Today, the Cornish economy depends heavily on its tourist industry, which makes up around a quarter of the economy. The official measures of deprivation and poverty at district and 'sub-ward' level show that there is great variation in poverty and prosperity in Cornwall with some areas among the poorest in England and others among the top half in prosperity. For example, the ranking of 32,482 sub-wards in England in the index of multiple deprivation (2006) ranged from 819th (part of Penzance East) to 30,899th (part of Saltash Burraton in Caradon), where the lower number represents the greater deprivation.