Somalia's economy is mainly based on subsistence agriculture comprising livestock herding and to a lesser extent a simple form of hoe-agriculture. Attempts to introduce modern techniques of animal husbandry and agriculture have been only partially successful. Agriculture was estimated to comprise of 59 percent of the GDP in 1995—with livestock alone contributing 41 percent of the GDP—services 31 percent, and industry 10 percent. Current estimates are that a higher proportion of GDP comes from agriculture, with services slightly reduced, and a much diminished role for industry.