The livestock industry is of great importance in South Dakota, particularly in the High Plains. In 2003 the state had an estimated 3.7 million cattle and calves, valued at around $2.9 billion. During 2002, there were 1.3 million hogs and pigs, valued at $99.3 million. In 2001 the state produced 27.6 million lb (12.5 million kg) of sheep and lambs, 166 million lb (75.3 million kg) of turkeys, 575 million eggs, and 2.3 million lb (1 million kg) of chickens. Dairy farmers produced nearly 1.58 billion lb (0.7 billion kg) of milk from around 99,000 milk cows in the same year.