 Extremes range from on February 9, 1899 to as recently as June 21, 1988.Originally centered on quarrying and agriculturally based industries, the economy of Sioux Falls has become diversified and more service-based over the last half-century, making the city a center of financial services, health care, and retail trade.Partially due to the lack of a state corporate income tax, Sioux Falls is home to a number of financial companies.