What can you infer as the cause-and-effect relationship here?

Beef Price (per pound) $2.70 $2.60 $2.50 $2.40 $2.30 $2.20 $2.10 $2.00 $2.09 $ 1.89 $ 1.99 2,500 3,500 $ 2.39 $ 2.69 1,000 4,000 6,000 Quantity Supplied (thousands of pounds)