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                    Closing price on 3/17/2011
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                    | Open | 12.30 |  
                    | High | 12.50 |  
                    | Low | 12.00 |  
                    | Volume | 7,800 |  
                    | Split-adjusted Price | 12.10 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 3/1/2011 | 0.00 / 0.00% | 12.80 | 12.80 | 12.60 | 12.60 | 12.60 | 12.60 | 9,700 |   |  
            | 2/28/2011 | -0.70 / -5.26% | 13.00 | 13.70 | 12.50 | 12.60 | 12.60 | 12.60 | 16,500 |   |  			
            | 2/25/2011 | +0.60 / +4.72% | 12.10 | 13.30 | 12.10 | 13.30 | 12.70 | 13.30 | 32,600 |   |  
            | 2/24/2011 | -0.10 / -0.78% | 13.00 | 13.00 | 12.10 | 12.70 | 12.70 | 12.70 | 39,000 |   |  			
            | 2/23/2011 | 0.00 / 0.00% | 12.50 | 13.40 | 11.90 | 12.80 | 12.80 | 12.80 | 18,600 |   |  
            | 2/22/2011 | -0.60 / -4.48% | 13.40 | 13.40 | 12.50 | 12.80 | 12.80 | 12.80 | 30,000 |   |  			
            | 2/21/2011 | -0.90 / -6.29% | 13.70 | 13.70 | 13.40 | 13.40 | 13.40 | 13.40 | 22,500 |   |  
            | 2/18/2011 | -0.60 / -4.03% | 15.00 | 15.00 | 14.10 | 14.30 | 14.90 | 14.30 | 20,000 |   |  			
            | 2/17/2011 | -0.60 / -3.87% | 15.70 | 15.70 | 14.80 | 14.90 | 14.90 | 14.90 | 13,100 |   |  
            | 2/16/2011 | -0.60 / -3.73% | 16.30 | 16.30 | 15.50 | 15.50 | 15.50 | 15.50 | 31,100 |   |  			
            | 2/15/2011 | -0.10 / -0.62% | 16.30 | 16.30 | 15.50 | 16.10 | 16.10 | 16.10 | 13,800 |   |  
            | 2/14/2011 | -0.30 / -1.82% | 16.70 | 16.80 | 16.20 | 16.20 | 16.20 | 16.20 | 9,600 |   |  			
            | 2/11/2011 | -0.20 / -1.20% | 16.50 | 16.60 | 16.30 | 16.50 | 16.48 | 16.50 | 15,400 |   |  
            | 2/10/2011 | -0.30 / -1.76% | 16.90 | 16.90 | 16.60 | 16.70 | 16.70 | 16.70 | 3,400 |   |  			
            | 2/9/2011 | -0.20 / -1.16% | 17.20 | 17.20 | 16.90 | 17.00 | 17.00 | 17.00 | 10,300 |   |  
            | 2/8/2011 | +0.20 / +1.18% | 17.20 | 17.20 | 17.20 | 17.20 | 17.20 | 17.20 | 500 |   |  			
            | 1/28/2011 | 0.00 / 0.00% | 17.00 | 17.10 | 16.90 | 17.00 | 17.00 | 17.00 | 4,500 |   |  
            | 1/27/2011 | +0.50 / +3.03% | 16.70 | 17.00 | 16.50 | 17.00 | 17.00 | 17.00 | 12,700 |   |  |