Who are the 10 richest people in South Dakota?

21ST CENTURY Bank 7 American National Bank 6 Bank of New Madrid 4 Casey County Bank 15 Citizens Farmers Bank of Cole Camp 1 COMMERCIAL Bank OF CALIFORNIA 12 ELKHORN VALLEY B&TC 3 EXTRACO BankS National Association 6 Farmers National Bank of Lebanon 2 First Bank & Trust of Fullerton 1 MANUFACTURERS & TRADERS TC 8 Maquoketa State Bank 4 New Century Bank 7 Park State Bank & Trust 1 PEOPLES State Bank 9 Prairie Community Bank 5 Riverstone Bank 6 Security State Bank of Wanamingo 14 Shelby State Bank 7 STARION Bank 19