The Northern Cape covers 30 per cent of South Africa's landmass and has an arid climate. In the east the average annual rainfall is 450-500 mm, while in the west it is 200 mm. In 2010, the total population of the province was about 1 103 900, accounting for 2.3 per cent share of the total population of South Africa. The province is one of the poor provinces of South Africa. Provided that farmers had access to irrigation water, mainly from either the Orange or the Vaal Rivers, farmers grow a variety of crops. The greater part of the province is predominantly utilized for extensive natural grazing. Animal and animal sector products sectors accounts for 50 per cent of the entire agricultural land use whereas the field crop sector and horticulture account for 25 per cent each. The economy of the province is dominated by agriculture and mining but the agricultural sector remains the main employer.