| 
    
        
            | 
                    Closing price on 9/7/2012
                 |  |  
    
        |           
                
                    | Open | 7.30 |  
                    | High | 7.40 |  
                    | Low | 7.30 |  
                    | Volume | 35,500 |  
                    | Split-adjusted Price | 1.74 |  
                
             | 
 |  PPS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/7/2012 | -0.10 / -1.33% | 7.30 | 7.40 | 7.30 | 7.40 | 7.40 | 1.74 | 35,500 |   |  
            | 9/6/2012 | 0.00 / 0.00% | 7.30 | 7.50 | 7.30 | 7.50 | 7.50 | 1.77 | 31,700 |   |  			
            | 9/5/2012 | -0.20 / -2.60% | 7.70 | 7.70 | 7.40 | 7.50 | 7.50 | 1.77 | 40,600 |   |  
            | 9/4/2012 | +0.20 / +2.67% | 7.50 | 7.70 | 7.50 | 7.70 | 7.70 | 1.82 | 28,500 |   |  			
            | 8/31/2012 | 0.00 / 0.00% | 7.20 | 7.50 | 7.20 | 7.50 | 7.50 | 1.77 | 12,000 |   |  
            | 8/30/2012 | -0.20 / -2.60% | 7.60 | 7.60 | 7.20 | 7.50 | 7.50 | 1.77 | 67,400 |   |  			
            | 8/29/2012 | +0.40 / +5.48% | 7.30 | 7.80 | 7.30 | 7.70 | 7.70 | 1.82 | 18,300 |   |  
            | 8/28/2012 | +0.30 / +4.29% | 6.80 | 7.30 | 6.80 | 7.30 | 7.30 | 1.72 | 7,400 |   |  			
            | 8/27/2012 | -0.50 / -6.67% | 7.50 | 7.50 | 7.00 | 7.00 | 7.00 | 1.65 | 87,400 |   |  
            | 8/24/2012 | 0.00 / 0.00% | 7.10 | 7.90 | 7.00 | 7.50 | 7.50 | 1.77 | 139,500 |   |  			
            | 8/23/2012 | -0.50 / -6.25% | 7.60 | 7.70 | 7.50 | 7.50 | 7.50 | 1.77 | 157,200 |   |  
            | 8/22/2012 | -0.50 / -5.88% | 8.00 | 8.50 | 8.00 | 8.00 | 8.00 | 1.89 | 85,600 |   |  			
            | 8/21/2012 | -0.60 / -6.59% | 8.90 | 8.90 | 8.50 | 8.50 | 8.50 | 2.00 | 102,100 |   |  
            | 8/20/2012 | +0.10 / +1.11% | 9.00 | 9.20 | 9.00 | 9.10 | 9.10 | 2.15 | 54,800 |   |  			
            | 8/17/2012 | 0.00 / 0.00% | 9.00 | 9.10 | 9.00 | 9.00 | 9.00 | 2.12 | 41,500 |   |  
            | 8/16/2012 | -0.10 / -1.10% | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 2.12 | 25,500 |   |  			
            | 8/15/2012 | 0.00 / 0.00% | 9.00 | 9.10 | 8.80 | 9.10 | 9.10 | 2.15 | 24,600 |   |  
            | 8/14/2012 | 0.00 / 0.00% | 9.00 | 9.10 | 9.00 | 9.10 | 9.10 | 2.15 | 12,900 |   |  			
            | 8/13/2012 | -0.10 / -1.09% | 9.00 | 9.10 | 8.90 | 9.10 | 9.10 | 2.15 | 32,600 |   |  
            | 8/10/2012 | -0.10 / -1.08% | 9.10 | 9.20 | 8.90 | 9.20 | 9.20 | 2.17 | 32,100 |   |  			
            | 8/9/2012 | +0.10 / +1.09% | 9.30 | 9.40 | 9.00 | 9.30 | 9.30 | 2.19 | 19,700 |   |  
            | 8/8/2012 | +0.20 / +2.22% | 9.20 | 9.30 | 9.00 | 9.20 | 9.20 | 2.17 | 13,100 |   |  			
            | 8/7/2012 | -0.20 / -2.17% | 9.10 | 9.30 | 9.00 | 9.00 | 9.00 | 2.12 | 39,500 |   |  
            | 8/6/2012 | +0.60 / +6.98% | 8.80 | 9.20 | 8.80 | 9.20 | 9.20 | 2.17 | 35,200 |   |  			
            | 8/3/2012 | -0.40 / -4.44% | 8.90 | 8.90 | 8.60 | 8.60 | 8.60 | 2.03 | 22,700 |   |  
            | 8/2/2012 | +0.20 / +2.27% | 9.10 | 9.10 | 8.90 | 9.00 | 9.00 | 2.12 | 6,800 |   |  			
            | 8/1/2012 | -0.30 / -3.30% | 9.30 | 9.30 | 8.80 | 8.80 | 8.80 | 2.07 | 45,900 |   |  
            | 7/31/2012 | +0.20 / +2.25% | 9.20 | 9.20 | 8.90 | 9.10 | 9.10 | 2.15 | 9,600 |   |  			
            | 7/30/2012 | +0.10 / +1.14% | 8.90 | 9.00 | 8.90 | 8.90 | 8.90 | 2.10 | 57,800 |   |  
            | 7/27/2012 | -0.40 / -4.35% | 9.20 | 9.20 | 8.80 | 8.80 | 8.80 | 2.07 | 27,200 |   |  |