In recent decades, South Dakota has been transformed from a state dominated by agriculture to one with a more diversified economy. The tourism industry has grown considerably since the completion of the interstate system in the 1960s, with the Black Hills becoming more important as a destination. The financial service industry began to grow in the state as well, with Citibank moving its credit card operations from New York to Sioux Falls in 1981, a move that has been followed by several other financial companies. South Dakota was the first state to eliminate caps on interest rates.