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                    Closing price on 4/17/2013
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                    | Open | 10.40 |  
                    | High | 10.50 |  
                    | Low | 10.40 |  
                    | Volume | 3,900 |  
                    | Split-adjusted Price | 2.48 |  
                
             | 
 |  PPS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/17/2013 | 0.00 / 0.00% | 10.40 | 10.50 | 10.40 | 10.50 | 10.50 | 2.48 | 3,900 |   |  
            | 4/16/2013 | +0.20 / +1.94% | 10.40 | 10.50 | 10.40 | 10.50 | 10.50 | 2.48 | 46,000 |   |  			
            | 4/15/2013 | -0.60 / -5.50% | 10.60 | 10.60 | 10.30 | 10.30 | 10.30 | 2.43 | 11,400 |   |  
            | 4/12/2013 | +0.30 / +2.83% | 10.60 | 11.20 | 10.60 | 10.90 | 10.90 | 2.57 | 81,300 |   |  			
            | 4/11/2013 | +0.10 / +0.95% | 10.50 | 10.60 | 10.40 | 10.60 | 10.60 | 2.50 | 8,300 |   |  
            | 4/10/2013 | -0.10 / -0.94% | 10.60 | 10.60 | 10.40 | 10.50 | 10.50 | 2.48 | 12,200 |   |  			
            | 4/9/2013 | +0.10 / +0.95% | 10.50 | 10.60 | 10.50 | 10.60 | 10.60 | 2.50 | 7,700 |   |  
            | 4/8/2013 | -0.30 / -2.78% | 10.40 | 10.80 | 10.40 | 10.50 | 10.50 | 2.48 | 27,800 |   |  			
            | 4/5/2013 | +0.30 / +2.86% | 10.40 | 10.80 | 10.30 | 10.80 | 10.80 | 2.55 | 37,800 |   |  
            | 4/4/2013 | +0.10 / +0.96% | 10.40 | 10.90 | 10.40 | 10.50 | 10.50 | 2.48 | 28,100 |   |  			
            | 4/3/2013 | -0.20 / -1.89% | 10.40 | 10.70 | 10.40 | 10.40 | 10.40 | 2.45 | 51,800 |   |  
            | 4/2/2013 | -0.50 / -4.50% | 10.90 | 11.00 | 10.50 | 10.60 | 10.60 | 2.50 | 33,600 |   |  			
            | 4/1/2013 | +0.10 / +0.91% | 11.20 | 11.20 | 10.90 | 11.10 | 11.10 | 2.62 | 31,300 |   |  
            | 3/29/2013 | +0.40 / +3.77% | 10.60 | 11.40 | 10.60 | 11.00 | 11.00 | 2.59 | 106,100 |   |  			
            | 3/28/2013 | +0.90 / +9.28% | 9.80 | 10.60 | 9.80 | 10.60 | 10.60 | 2.50 | 53,600 |   |  
            | 3/27/2013 | +0.10 / +1.04% | 9.60 | 9.70 | 9.50 | 9.70 | 9.70 | 2.29 | 16,200 |   |  			
            | 3/26/2013 | 0.00 / 0.00% | 9.60 | 9.60 | 9.60 | 9.60 | 9.60 | 2.26 | 14,600 |   |  
            | 3/25/2013 | -0.10 / -1.03% | 9.60 | 9.60 | 9.60 | 9.60 | 9.60 | 2.26 | 12,800 |   |  			
            | 3/22/2013 | 0.00 / 0.00% | 9.70 | 9.70 | 9.60 | 9.70 | 9.70 | 2.29 | 13,600 |   |  
            | 3/21/2013 | -0.10 / -1.02% | 9.80 | 9.80 | 9.70 | 9.70 | 9.70 | 2.29 | 9,400 |   |  			
            | 3/20/2013 | +0.10 / +1.03% | 9.70 | 9.90 | 9.70 | 9.80 | 9.80 | 2.31 | 6,800 |   |  
            | 3/19/2013 | -0.20 / -2.02% | 9.70 | 9.70 | 9.70 | 9.70 | 9.70 | 2.29 | 4,900 |   |  			
            | 3/18/2013 | +0.10 / +1.02% | 9.60 | 9.90 | 9.50 | 9.90 | 9.90 | 2.33 | 3,200 |   |  
            | 3/15/2013 | 0.00 / 0.00% | 9.80 | 9.80 | 9.80 | 9.80 | 9.80 | 2.31 | 10,800 |   |  			
            | 3/14/2013 | 0.00 / 0.00% | 9.60 | 9.80 | 9.60 | 9.80 | 9.80 | 2.31 | 8,800 |   |  
            | 3/13/2013 | 0.00 / 0.00% | 9.80 | 9.80 | 9.80 | 9.80 | 9.80 | 2.31 | 15,100 |   |  			
            | 3/12/2013 | -0.10 / -1.01% | 9.80 | 9.90 | 9.70 | 9.80 | 9.80 | 2.31 | 13,200 |   |  
            | 3/11/2013 | +0.20 / +2.06% | 9.40 | 9.90 | 9.40 | 9.90 | 9.90 | 2.33 | 10,100 |   |  			
            | 3/8/2013 | 0.00 / 0.00% | 9.90 | 9.90 | 9.70 | 9.70 | 9.70 | 2.29 | 2,100 |   |  
            | 3/7/2013 | -0.20 / -2.02% | 9.80 | 9.90 | 9.70 | 9.70 | 9.70 | 2.29 | 35,500 |   |  |