| 
    
        
            | 
                    Closing price on 3/11/2013
                 |  |  
    
        |           
                
                    | Open | 9.40 |  
                    | High | 9.90 |  
                    | Low | 9.40 |  
                    | Volume | 10,100 |  
                    | Split-adjusted Price | 2.33 |  
                
             | 
 |  PPS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 3/6/2013 | +0.10 / +1.02% | 9.80 | 10.00 | 9.70 | 9.90 | 9.90 | 2.33 | 9,300 |   |  			
            | 3/5/2013 | -0.30 / -2.97% | 10.00 | 10.00 | 9.80 | 9.80 | 9.80 | 2.31 | 5,100 |   |  
            | 3/4/2013 | -0.10 / -0.98% | 10.10 | 10.10 | 10.00 | 10.10 | 10.10 | 2.38 | 51,200 |   |  			
            | 3/1/2013 | 0.00 / 0.00% | 10.40 | 10.40 | 10.20 | 10.20 | 10.20 | 2.40 | 25,500 |   |  
            | 2/28/2013 | -0.10 / -0.97% | 10.40 | 10.40 | 10.20 | 10.20 | 10.20 | 2.40 | 55,300 |   |  			
            | 2/27/2013 | +0.10 / +0.98% | 10.00 | 10.30 | 10.00 | 10.30 | 10.30 | 2.43 | 24,300 |   |  
            | 2/26/2013 | -0.40 / -3.77% | 10.60 | 10.60 | 10.00 | 10.20 | 10.20 | 2.40 | 39,900 |   |  			
            | 2/25/2013 | +0.10 / +0.95% | 10.60 | 10.60 | 10.40 | 10.60 | 10.60 | 2.50 | 39,500 |   |  
            | 2/22/2013 | 0.00 / 0.00% | 10.50 | 10.70 | 10.20 | 10.50 | 10.50 | 2.48 | 82,000 |   |  			
            | 2/21/2013 | -0.70 / -6.25% | 11.10 | 11.20 | 10.30 | 10.50 | 10.50 | 2.48 | 110,100 |   |  
            | 2/20/2013 | +0.20 / +1.82% | 11.00 | 11.20 | 10.90 | 11.20 | 11.20 | 2.64 | 30,100 |   |  			
            | 2/19/2013 | -0.20 / -1.79% | 11.30 | 11.40 | 11.00 | 11.00 | 11.00 | 2.59 | 53,800 |   |  
            | 2/18/2013 | +0.60 / +5.66% | 11.10 | 11.20 | 10.80 | 11.20 | 11.20 | 2.64 | 31,400 |   |  			
            | 2/8/2013 | -0.40 / -3.64% | 11.00 | 11.00 | 10.50 | 10.60 | 10.60 | 2.50 | 74,700 |   |  
            | 2/7/2013 | 0.00 / 0.00% | 11.00 | 11.00 | 10.60 | 11.00 | 11.00 | 2.59 | 7,000 |   |  			
            | 2/6/2013 | +0.40 / +3.77% | 11.10 | 11.10 | 11.00 | 11.00 | 11.00 | 2.59 | 3,300 |   |  
            | 2/5/2013 | -0.10 / -0.93% | 10.60 | 10.70 | 10.50 | 10.60 | 10.60 | 2.50 | 170,200 |   |  			
            | 2/4/2013 | -0.60 / -5.31% | 11.20 | 11.20 | 10.70 | 10.70 | 10.70 | 2.52 | 35,000 |   |  
            | 2/1/2013 | +0.30 / +2.73% | 11.10 | 11.30 | 10.70 | 11.30 | 11.30 | 2.66 | 31,200 |   |  			
            | 1/31/2013 | -0.20 / -1.79% | 11.20 | 11.20 | 10.80 | 11.00 | 11.00 | 2.59 | 45,200 |   |  
            | 1/30/2013 | -0.30 / -2.61% | 11.70 | 11.70 | 11.10 | 11.20 | 11.20 | 2.64 | 41,800 |   |  			
            | 1/29/2013 | -0.30 / -2.54% | 11.60 | 11.70 | 11.30 | 11.50 | 11.50 | 2.71 | 46,400 |   |  
            | 1/28/2013 | +0.40 / +3.51% | 11.60 | 12.20 | 11.50 | 11.80 | 11.80 | 2.78 | 111,300 |   |  			
            | 1/25/2013 | +0.90 / +8.57% | 10.50 | 11.50 | 10.50 | 11.40 | 11.40 | 2.69 | 157,300 |   |  
            | 1/24/2013 | +0.40 / +3.96% | 10.20 | 10.50 | 10.10 | 10.50 | 10.50 | 2.48 | 34,000 |   |  			
            | 1/23/2013 | 0.00 / 0.00% | 10.50 | 10.50 | 9.80 | 10.10 | 10.10 | 2.38 | 25,200 |   |  
            | 1/22/2013 | -0.50 / -4.72% | 10.60 | 10.60 | 10.00 | 10.10 | 10.10 | 2.38 | 73,200 |   |  |