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                    Closing price on 4/14/2011
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                    | Open | 11.60 |  
                    | High | 11.60 |  
                    | Low | 11.00 |  
                    | Volume | 29,500 |  
                    | Split-adjusted Price | 11.00 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/14/2011 | -0.30 / -2.65% | 11.60 | 11.60 | 11.00 | 11.00 | 11.00 | 11.00 | 29,500 |   |  
            | 4/13/2011 | -0.30 / -2.59% | 11.70 | 11.70 | 11.20 | 11.30 | 11.30 | 11.30 | 35,900 |   |  			
            | 4/8/2011 | -0.30 / -2.52% | 11.40 | 11.80 | 11.40 | 11.60 | 11.55 | 11.60 | 35,400 |   |  
            | 4/7/2011 | -0.20 / -1.65% | 11.90 | 12.10 | 11.80 | 11.90 | 11.90 | 11.90 | 42,000 |   |  			
            | 4/6/2011 | +0.50 / +4.31% | 11.80 | 12.20 | 11.80 | 12.10 | 12.10 | 12.10 | 42,200 |   |  
            | 4/5/2011 | 0.00 / 0.00% | 11.70 | 11.70 | 11.60 | 11.60 | 11.60 | 11.60 | 15,400 |   |  			
            | 4/4/2011 | -0.20 / -1.69% | 11.50 | 11.80 | 11.30 | 11.60 | 11.60 | 11.60 | 34,500 |   |  
            | 4/1/2011 | -0.10 / -0.84% | 11.90 | 12.00 | 11.70 | 11.80 | 11.90 | 11.80 | 27,600 |   |  			
            | 3/31/2011 | -0.10 / -0.83% | 12.00 | 12.50 | 11.80 | 11.90 | 11.90 | 11.90 | 38,000 |   |  
            | 3/30/2011 | 0.00 / 0.00% | 11.80 | 12.10 | 11.60 | 12.00 | 12.00 | 12.00 | 39,700 |   |  			
            | 3/29/2011 | -0.30 / -2.44% | 12.40 | 12.40 | 12.00 | 12.00 | 12.00 | 12.00 | 21,200 |   |  
            | 3/28/2011 | -0.50 / -3.91% | 13.00 | 13.00 | 12.30 | 12.30 | 12.30 | 12.30 | 33,600 |   |  			
            | 3/25/2011 | +0.30 / +2.40% | 12.50 | 13.20 | 12.40 | 12.80 | 12.50 | 12.80 | 101,300 |   |  
            | 3/24/2011 | -0.90 / -6.72% | 13.10 | 13.10 | 12.30 | 12.50 | 12.50 | 12.50 | 184,800 |   |  			
            | 3/23/2011 | +0.30 / +2.29% | 13.10 | 13.50 | 13.00 | 13.40 | 13.40 | 13.40 | 30,700 |   |  
            | 3/22/2011 | -0.50 / -3.68% | 13.50 | 13.70 | 13.00 | 13.10 | 13.10 | 13.10 | 39,200 |   |  			
            | 3/21/2011 | +0.60 / +4.62% | 13.50 | 13.60 | 13.50 | 13.60 | 13.60 | 13.60 | 52,600 |   |  
            | 3/18/2011 | +0.90 / +7.44% | 12.50 | 13.00 | 12.20 | 13.00 | 12.68 | 13.00 | 42,500 |   |  			
            | 3/17/2011 | -0.60 / -4.72% | 12.30 | 12.50 | 12.00 | 12.10 | 12.10 | 12.10 | 7,800 |   |  
            | 3/16/2011 | +0.70 / +5.83% | 12.40 | 12.80 | 12.00 | 12.70 | 12.70 | 12.70 | 41,300 |   |  			
            | 3/15/2011 | -0.40 / -3.23% | 12.00 | 12.70 | 11.90 | 12.00 | 12.00 | 12.00 | 18,100 |   |  
            | 3/14/2011 | -0.90 / -6.77% | 12.90 | 12.90 | 12.40 | 12.40 | 12.40 | 12.40 | 11,200 |   |  			
            | 3/11/2011 | +0.70 / +5.56% | 13.10 | 13.30 | 13.00 | 13.30 | 13.18 | 13.30 | 47,100 |   |  
            | 3/10/2011 | +0.70 / +5.88% | 11.80 | 12.60 | 11.80 | 12.60 | 12.60 | 12.60 | 33,900 |   |  			
            | 3/9/2011 | -0.10 / -0.83% | 11.20 | 11.90 | 11.20 | 11.90 | 11.90 | 11.90 | 3,100 |   |  
            | 3/8/2011 | 0.00 / 0.00% | 12.10 | 12.10 | 11.90 | 12.00 | 12.00 | 12.00 | 23,900 |   |  			
            | 3/7/2011 | 0.00 / 0.00% | 12.00 | 12.10 | 11.70 | 12.00 | 12.00 | 12.00 | 1,800 |   |  
            | 3/4/2011 | +0.40 / +3.45% | 11.60 | 12.00 | 11.60 | 12.00 | 11.60 | 12.00 | 19,100 |   |  			
            | 3/3/2011 | -0.40 / -3.33% | 12.00 | 12.10 | 11.60 | 11.60 | 11.60 | 11.60 | 19,500 |   |  
            | 3/2/2011 | -0.60 / -4.76% | 12.50 | 12.50 | 11.90 | 12.00 | 12.00 | 12.00 | 28,300 |   |  |