In 1997 Idaho's wholesale establishments registered nearly $11 billion in sales. Retail sales in 1997 totaled $12 billion (with the 6th-highest growth rate in the state for the previous five years, at about 50%), with automotive dealers and service stations accounting for 15% of retail establishments; food stores, 9%; and eating and drinking places, 30%. Food sales totaled $2.4 billion, while merchandise sales totaled $1.4 billion, in 1997. Boise is the headquarters of the Albertson's supermarket chain, a major retailer. About two-thirds of Idaho's wheat crop and a substantial amount of its fertilizer, peas, lentils, beans, potatoes, and barley are exported abroad. Natural gas and sulfate are imported from Canada in significant quantities. Foreign exports of goods from Idaho were valued at $1.5 billion in 1998 (43rd in the US). The Department of Commerce organized two trade missions in 1999, to China and Mexico, worth a potential total of $15 million in trade agreements.