In 2008 and 2009, the lending dropped off freezing up capital markets and stalling all infrastructure projects leading to a fall in demand for commodities, which crashed the overall prices. Though as you can see now these projects are back on and lending has come back especially in China where the lending policies are very liberal. Other indicators will also push up the price of commodities. In 2010, it is expected for GDP growth to increase 1.2% after falling 2.2% in 2009. More cash in hand increases demand therefore making commodities more desired again.