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                    Closing price on 11/6/2012
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                    | Open | 3.40 |  
                    | High | 3.40 |  
                    | Low | 3.30 |  
                    | Volume | 19,900 |  
                    | Split-adjusted Price | 3.30 |  
                
             | 
 |  PSI Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/6/2012 | -0.20 / -5.71% | 3.40 | 3.40 | 3.30 | 3.30 | 3.30 | 3.30 | 19,900 |   |  
            | 11/5/2012 | 0.00 / 0.00% | 3.40 | 3.50 | 3.30 | 3.50 | 3.50 | 3.50 | 10,300 |   |  			
            | 11/2/2012 | -0.20 / -5.41% | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | 3,000 |   |  
            | 11/1/2012 | -0.10 / -2.63% | 3.60 | 3.70 | 3.60 | 3.70 | 3.70 | 3.70 | 3,925 |   |  			
            | 10/31/2012 | 0.00 / 0.00% | 3.60 | 3.80 | 3.60 | 3.80 | 3.80 | 3.80 | 12,620 |   |  
            | 10/30/2012 | +0.20 / +5.56% | 3.60 | 3.80 | 3.60 | 3.80 | 3.80 | 3.80 | 5,500 |   |  			
            | 10/29/2012 | -0.10 / -2.70% | 3.50 | 3.90 | 3.50 | 3.60 | 3.60 | 3.60 | 5,300 |   |  
            | 10/26/2012 | +0.10 / +2.78% | 3.60 | 3.70 | 3.60 | 3.70 | 3.70 | 3.70 | 8,300 |   |  			
            | 10/25/2012 | -0.10 / -2.70% | 3.60 | 3.60 | 3.50 | 3.60 | 3.60 | 3.60 | 4,500 |   |  
            | 10/24/2012 | -0.10 / -2.63% | 3.70 | 3.70 | 3.60 | 3.70 | 3.70 | 3.70 | 18,700 |   |  			
            | 10/23/2012 | 0.00 / 0.00% | 3.70 | 3.80 | 3.60 | 3.80 | 3.80 | 3.80 | 3,300 |   |  
            | 10/22/2012 | -0.10 / -2.56% | 3.70 | 3.80 | 3.70 | 3.80 | 3.80 | 3.80 | 48,000 |   |  			
            | 10/19/2012 | -0.10 / -2.50% | 3.80 | 4.00 | 3.80 | 3.90 | 3.90 | 3.90 | 10,300 |   |  
            | 10/18/2012 | 0.00 / 0.00% | 4.00 | 4.00 | 3.90 | 4.00 | 4.00 | 4.00 | 130,400 |   |  			
            | 10/17/2012 | 0.00 / 0.00% | 4.00 | 4.00 | 3.80 | 4.00 | 4.00 | 4.00 | 167,100 |   |  
            | 10/16/2012 | +0.20 / +5.26% | 3.80 | 4.00 | 3.80 | 4.00 | 4.00 | 4.00 | 78,725 |   |  			
            | 10/15/2012 | -0.10 / -2.56% | 3.90 | 3.90 | 3.80 | 3.80 | 3.80 | 3.80 | 127,300 |   |  
            | 10/12/2012 | -0.10 / -2.50% | 3.90 | 4.00 | 3.80 | 3.90 | 3.90 | 3.90 | 59,500 |   |  			
            | 10/11/2012 | +0.10 / +2.56% | 3.80 | 4.10 | 3.80 | 4.00 | 4.00 | 4.00 | 126,600 |   |  
            | 10/10/2012 | +0.10 / +2.63% | 3.80 | 4.00 | 3.70 | 3.90 | 3.90 | 3.90 | 70,800 |   |  			
            | 10/9/2012 | +0.10 / +2.70% | 3.80 | 3.80 | 3.60 | 3.80 | 3.80 | 3.80 | 48,600 |   |  
            | 10/8/2012 | +0.10 / +2.78% | 3.50 | 3.70 | 3.40 | 3.70 | 3.70 | 3.70 | 80,000 |   |  			
            | 10/5/2012 | +0.10 / +2.86% | 3.50 | 3.60 | 3.50 | 3.60 | 3.60 | 3.60 | 20,400 |   |  
            | 10/4/2012 | -0.10 / -2.78% | 3.60 | 3.60 | 3.40 | 3.50 | 3.50 | 3.50 | 9,625 |   |  			
            | 10/3/2012 | +0.20 / +5.88% | 3.50 | 3.60 | 3.20 | 3.60 | 3.60 | 3.60 | 68,600 |   |  
            | 10/2/2012 | -0.10 / -2.86% | 3.50 | 3.50 | 3.40 | 3.40 | 3.40 | 3.40 | 15,200 |   |  			
            | 10/1/2012 | +0.10 / +2.94% | 3.60 | 3.60 | 3.50 | 3.50 | 3.50 | 3.50 | 118,400 |   |  
            | 9/28/2012 | -0.20 / -5.56% | 3.50 | 3.70 | 3.40 | 3.40 | 3.40 | 3.40 | 62,100 |   |  			
            | 9/27/2012 | -0.10 / -2.70% | 3.70 | 3.70 | 3.50 | 3.60 | 3.60 | 3.60 | 39,800 |   |  
            | 9/26/2012 | 0.00 / 0.00% | 3.60 | 3.70 | 3.50 | 3.70 | 3.70 | 3.70 | 12,100 |   |  |