Indigenous Peoples are culturally distinct societies and communities; the land on which they live and the natural resources on which they depend are inextricably linked to their identities, cultures and economies. There are approximately 300 million Indigenous Peoples worldwide. Although they make up roughly 4.5 percent of the global population, they account for about 10 percent of the poor.
http://www.worldbank.org/en/topic/indigenouspeoples/overview