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                    Closing price on 11/8/2011
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                    | Open | 4.70 |  
                    | High | 4.80 |  
                    | Low | 4.50 |  
                    | Volume | 16,500 |  
                    | Split-adjusted Price | 4.60 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/8/2011 | 0.00 / 0.00% | 4.70 | 4.80 | 4.50 | 4.60 | 4.60 | 4.60 | 16,500 |   |  
            | 11/7/2011 | -0.20 / -4.17% | 4.70 | 4.70 | 4.50 | 4.60 | 4.60 | 4.60 | 51,600 |   |  			
            | 11/4/2011 | 0.00 / 0.00% | 4.80 | 4.80 | 4.70 | 4.80 | 4.80 | 4.80 | 55,600 |   |  
            | 11/3/2011 | 0.00 / 0.00% | 4.80 | 4.80 | 4.60 | 4.80 | 4.80 | 4.80 | 35,800 |   |  			
            | 11/2/2011 | -0.20 / -4.00% | 4.90 | 4.90 | 4.70 | 4.80 | 4.80 | 4.80 | 33,800 |   |  
            | 11/1/2011 | -0.20 / -3.85% | 5.30 | 5.30 | 5.00 | 5.00 | 5.00 | 5.00 | 29,400 |   |  			
            | 10/31/2011 | 0.00 / 0.00% | 5.40 | 5.40 | 5.10 | 5.20 | 5.20 | 5.20 | 143,800 |   |  
            | 10/28/2011 | +0.30 / +6.12% | 5.00 | 5.20 | 5.00 | 5.20 | 5.10 | 5.20 | 46,900 |   |  			
            | 10/27/2011 | -0.10 / -2.00% | 5.00 | 5.10 | 4.80 | 4.90 | 4.90 | 4.90 | 93,700 |   |  
            | 10/26/2011 | -0.10 / -1.96% | 5.00 | 5.10 | 4.90 | 5.00 | 5.00 | 5.00 | 43,200 |   |  			
            | 10/25/2011 | -0.10 / -1.92% | 5.10 | 5.10 | 5.00 | 5.10 | 5.10 | 5.10 | 35,300 |   |  
            | 10/24/2011 | -0.10 / -1.89% | 5.50 | 5.50 | 5.20 | 5.20 | 5.20 | 5.20 | 23,500 |   |  			
            | 10/21/2011 | +0.30 / +6.00% | 5.10 | 5.30 | 5.10 | 5.30 | 5.20 | 5.30 | 26,700 |   |  
            | 10/20/2011 | 0.00 / 0.00% | 5.00 | 5.10 | 5.00 | 5.00 | 5.00 | 5.00 | 28,500 |   |  			
            | 10/19/2011 | 0.00 / 0.00% | 5.10 | 5.20 | 4.80 | 5.00 | 5.00 | 5.00 | 83,200 |   |  
            | 10/18/2011 | -0.20 / -3.85% | 5.10 | 5.20 | 5.00 | 5.00 | 5.00 | 5.00 | 51,300 |   |  			
            | 10/17/2011 | -0.10 / -1.89% | 5.40 | 5.40 | 5.20 | 5.20 | 5.20 | 5.20 | 19,400 |   |  
            | 10/14/2011 | -0.10 / -1.85% | 5.40 | 5.50 | 5.30 | 5.30 | 5.40 | 5.30 | 16,000 |   |  			
            | 10/13/2011 | -0.10 / -1.82% | 5.40 | 5.40 | 5.30 | 5.40 | 5.40 | 5.40 | 10,400 |   |  
            | 10/12/2011 | -0.10 / -1.79% | 5.60 | 5.60 | 5.40 | 5.50 | 5.50 | 5.50 | 53,700 |   |  			
            | 10/11/2011 | 0.00 / 0.00% | 5.80 | 5.80 | 5.60 | 5.60 | 5.60 | 5.60 | 9,300 |   |  
            | 10/10/2011 | -0.10 / -1.75% | 6.00 | 6.00 | 5.50 | 5.60 | 5.60 | 5.60 | 13,100 |   |  			
            | 10/7/2011 | -0.20 / -3.39% | 6.20 | 6.20 | 5.70 | 5.70 | 5.90 | 5.70 | 33,200 |   |  
            | 10/6/2011 | +0.30 / +5.36% | 5.60 | 5.90 | 5.60 | 5.90 | 5.90 | 5.90 | 63,300 |   |  			
            | 10/5/2011 | -0.10 / -1.75% | 5.70 | 5.80 | 5.50 | 5.60 | 5.60 | 5.60 | 46,100 |   |  
            | 10/4/2011 | -0.10 / -1.72% | 5.60 | 5.90 | 5.50 | 5.70 | 5.70 | 5.70 | 110,800 |   |  			
            | 10/3/2011 | 0.00 / 0.00% | 5.90 | 5.90 | 5.50 | 5.80 | 5.80 | 5.80 | 39,900 |   |  
            | 9/30/2011 | -0.20 / -3.33% | 6.00 | 6.00 | 5.80 | 5.80 | 6.00 | 5.80 | 34,800 |   |  			
            | 9/29/2011 | -0.30 / -4.76% | 6.10 | 6.20 | 5.90 | 6.00 | 6.00 | 6.00 | 100,000 |   |  
            | 9/28/2011 | +0.30 / +5.00% | 6.10 | 6.30 | 6.00 | 6.30 | 6.30 | 6.30 | 102,800 |   |  |