Let's calculate the indices: Index Mid-Atlantic: Index Mid-Atlantic = ( 970 , 000 15 , 744 , 000 ) 100 Index Mid-Atlantic=( 15,744,000 970,000 )100 Index West Central: Index West Central = ( 411 , 000 13 , 616 , 000 ) 100 Index West Central=( 13,616,000 411,000 )100 Index South East: Index South East = ( 135 , 000 18 , 271 , 000 ) 100 Index South East=( 18,271,000 135,000 )100 Index South West: Index South West = ( 94 , 000 10 , 224 , 000 ) 100 Index South West=( 10,224,000 94,000 )100