The Ethiopian constitution defines the right to own land as belonging only to "the state and the people", but citizens may lease land (up to 99 years), and are unable to mortgage or sell. Renting of land for a maximum of twenty years is allowed and this is expected to ensure that land goes to the most productive user. Land distribution and administration is considered an area where corruption is institutionalized, and facilitation payments as well as bribes are often demanded when dealing with land-related issues. As there is no land ownership, infrastructural projects are most often simply done without asking the land users, which then end up being displaced and without home or land. A lot of anger and distrust sometimes results in public protests. In addition, agricultural productivity remains low, and frequent droughts still beset the country, also leading to internal displacement.