Another influential factor is oil revenues. Historically, in periods of high oil prices and the consequent petrodollar windfall, imports accelerate rapidly in virtually all consumption categories including agricultural products. This, in turn, results in crowding out domestic production and damage to the agriculture sector. After the oil price spikes following 1973, agricultural imports also increased dramatically and caused significant damage to domestic production. Between 1970 and 1976, agricultural imports grew at the staggering annual rate of 35%. This experience was repeated in the past couple of years when oil prices were at or over $100 per barrel; the result is that agricultural imports have increased at a rapid pace and foreign products now form a sizeable chunk of the household consumption basket. Over the past few years, there have been significant price increases in agricultural products in Iran. This is due both to rising domestic demand and to rising global commodity prices.