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                    Closing price on 8/10/2012
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        |           
                
                    | Open | 9.10 |  
                    | High | 9.20 |  
                    | Low | 8.90 |  
                    | Volume | 32,100 |  
                    | Split-adjusted Price | 2.17 |  
                
             | 
 |  PPS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 7/26/2012 | +0.20 / +2.22% | 9.10 | 9.20 | 9.10 | 9.20 | 9.20 | 2.17 | 9,300 |   |  			
            | 7/25/2012 | -0.20 / -2.17% | 8.90 | 9.20 | 8.70 | 9.00 | 9.00 | 2.12 | 44,500 |   |  
            | 7/24/2012 | -0.60 / -6.12% | 9.60 | 9.60 | 9.20 | 9.20 | 9.20 | 2.17 | 104,000 |   |  			
            | 7/23/2012 | -0.20 / -2.00% | 10.00 | 10.00 | 9.70 | 9.80 | 9.80 | 2.31 | 17,200 |   |  
            | 7/20/2012 | -0.20 / -1.96% | 10.20 | 10.60 | 10.00 | 10.00 | 10.00 | 2.36 | 117,200 |   |  			
            | 7/19/2012 | +0.70 / +7.37% | 9.60 | 10.20 | 9.30 | 10.20 | 10.20 | 2.40 | 182,800 |   |  
            | 7/18/2012 | -0.20 / -2.06% | 9.80 | 9.80 | 9.20 | 9.50 | 9.50 | 2.24 | 57,000 |   |  			
            | 7/17/2012 | +0.30 / +3.19% | 9.30 | 9.70 | 9.20 | 9.70 | 9.70 | 2.29 | 59,800 |   |  
            | 7/16/2012 | -0.40 / -4.08% | 9.70 | 9.90 | 9.30 | 9.40 | 9.40 | 2.22 | 42,500 |   |  			
            | 7/13/2012 | +0.70 / +7.69% | 9.20 | 9.80 | 9.20 | 9.80 | 9.80 | 2.31 | 113,700 |   |  
            | 7/12/2012 | +0.20 / +2.25% | 9.10 | 9.30 | 8.70 | 9.10 | 9.10 | 2.15 | 83,000 |   |  			
            | 7/11/2012 | +0.20 / +2.30% | 8.80 | 8.90 | 8.80 | 8.90 | 8.90 | 2.10 | 23,400 |   |  
            | 7/10/2012 | 0.00 / 0.00% | 8.40 | 8.90 | 8.40 | 8.70 | 8.70 | 2.05 | 117,200 |   |  			
            | 7/9/2012 | -0.70 / -7.45% | 9.00 | 9.00 | 8.70 | 8.70 | 8.70 | 2.05 | 52,000 |   |  
            | 7/6/2012 | -0.10 / -1.05% | 9.40 | 9.70 | 9.30 | 9.40 | 9.40 | 2.22 | 24,300 |   |  			
            | 7/5/2012 | +0.60 / +6.74% | 8.90 | 9.50 | 8.90 | 9.50 | 9.50 | 2.24 | 71,500 |   |  
            | 7/4/2012 | -0.50 / -5.32% | 9.60 | 9.60 | 8.90 | 8.90 | 8.90 | 2.10 | 89,000 |   |  			
            | 7/3/2012 | -0.20 / -2.08% | 9.80 | 9.80 | 9.30 | 9.40 | 9.40 | 2.22 | 74,900 |   |  
            | 7/2/2012 | -0.70 / -6.80% | 10.10 | 10.10 | 9.60 | 9.60 | 9.60 | 2.26 | 88,500 |   |  |