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                    Closing price on 10/15/2013
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                    | Open | 6.00 |  
                    | High | 6.10 |  
                    | Low | 6.00 |  
                    | Volume | 8,500 |  
                    | Split-adjusted Price | 6.10 |  
                
             | 
 |  PSI Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/15/2013 | +0.20 / +3.39% | 6.00 | 6.10 | 6.00 | 6.10 | 6.10 | 6.10 | 8,500 |   |  
            | 10/14/2013 | 0.00 / 0.00% | 6.10 | 6.10 | 5.90 | 5.90 | 5.90 | 5.90 | 29,000 |   |  			
            | 10/11/2013 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5,500 |   |  
            | 10/10/2013 | -0.20 / -3.28% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 9,050 |   |  			
            | 10/9/2013 | +0.10 / +1.67% | 5.90 | 6.10 | 5.80 | 6.10 | 6.10 | 6.10 | 36,700 |   |  
            | 10/8/2013 | 0.00 / 0.00% | 6.00 | 6.00 | 5.90 | 6.00 | 6.00 | 6.00 | 66,000 |   |  			
            | 10/7/2013 | -0.10 / -1.64% | 6.00 | 6.00 | 5.90 | 6.00 | 6.00 | 6.00 | 126,400 |   |  
            | 10/4/2013 | -0.10 / -1.61% | 5.90 | 6.10 | 5.90 | 6.10 | 6.10 | 6.10 | 21,200 |   |  			
            | 10/3/2013 | 0.00 / 0.00% | 6.10 | 6.20 | 5.90 | 6.20 | 6.20 | 6.20 | 55,300 |   |  
            | 10/2/2013 | -0.10 / -1.59% | 6.20 | 6.20 | 6.10 | 6.20 | 6.20 | 6.20 | 41,400 |   |  			
            | 10/1/2013 | -0.30 / -4.55% | 6.20 | 6.30 | 6.20 | 6.30 | 6.30 | 6.30 | 11,900 |   |  
            | 9/30/2013 | +0.30 / +4.76% | 6.00 | 6.60 | 6.00 | 6.60 | 6.60 | 6.60 | 82,400 |   |  			
            | 9/27/2013 | +0.10 / +1.61% | 6.20 | 6.30 | 6.20 | 6.30 | 6.30 | 6.30 | 18,200 |   |  
            | 9/26/2013 | 0.00 / 0.00% | 6.10 | 6.20 | 6.10 | 6.20 | 6.20 | 6.20 | 15,500 |   |  			
            | 9/25/2013 | +0.30 / +5.08% | 5.80 | 6.20 | 5.80 | 6.20 | 6.20 | 6.20 | 53,710 |   |  
            | 9/24/2013 | +0.10 / +1.72% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 600 |   |  			
            | 9/23/2013 | -0.10 / -1.69% | 5.70 | 5.80 | 5.70 | 5.80 | 5.80 | 5.80 | 52,520 |   |  
            | 9/20/2013 | +0.40 / +7.27% | 5.50 | 5.90 | 5.50 | 5.90 | 5.90 | 5.90 | 25,600 |   |  			
            | 9/19/2013 | +0.10 / +1.85% | 5.50 | 5.50 | 5.40 | 5.50 | 5.50 | 5.50 | 66,200 |   |  
            | 9/18/2013 | 0.00 / 0.00% | 5.50 | 5.50 | 5.30 | 5.40 | 5.40 | 5.40 | 82,525 |   |  			
            | 9/17/2013 | -0.30 / -5.26% | 5.70 | 5.70 | 5.40 | 5.40 | 5.40 | 5.40 | 141,900 |   |  
            | 9/16/2013 | -0.20 / -3.39% | 5.90 | 5.90 | 5.70 | 5.70 | 5.70 | 5.70 | 44,600 |   |  			
            | 9/13/2013 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 51,900 |   |  
            | 9/12/2013 | -0.10 / -1.67% | 5.90 | 6.00 | 5.40 | 5.90 | 5.90 | 5.90 | 16,600 |   |  			
            | 9/11/2013 | 0.00 / 0.00% | 5.90 | 6.00 | 5.90 | 6.00 | 6.00 | 6.00 | 6,500 |   |  
            | 9/10/2013 | +0.10 / +1.69% | 5.90 | 6.00 | 5.90 | 6.00 | 6.00 | 6.00 | 26,300 |   |  			
            | 9/9/2013 | -0.10 / -1.67% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 50,600 |   |  
            | 9/6/2013 | +0.10 / +1.69% | 5.90 | 6.00 | 5.90 | 6.00 | 6.00 | 6.00 | 18,700 |   |  			
            | 9/5/2013 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 17,400 |   |  
            | 9/4/2013 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 88,600 |   |  |