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                    Closing price on 12/13/2011
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        |           
                
                    | Open | 3.90 |  
                    | High | 4.00 |  
                    | Low | 3.80 |  
                    | Volume | 15,200 |  
                    | Split-adjusted Price | 3.80 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/13/2011 | -0.20 / -5.00% | 3.90 | 4.00 | 3.80 | 3.80 | 3.80 | 3.80 | 15,200 |   |  
            | 12/12/2011 | -0.10 / -2.44% | 4.10 | 4.10 | 3.90 | 4.00 | 4.00 | 4.00 | 34,000 |   |  			
            | 12/9/2011 | -0.10 / -2.38% | 4.30 | 4.30 | 4.10 | 4.10 | 4.20 | 4.10 | 11,800 |   |  
            | 12/8/2011 | +0.10 / +2.44% | 4.30 | 4.30 | 4.20 | 4.20 | 4.20 | 4.20 | 4,600 |   |  			
            | 12/7/2011 | -0.20 / -4.65% | 4.50 | 4.50 | 4.10 | 4.10 | 4.10 | 4.10 | 27,000 |   |  
            | 12/6/2011 | 0.00 / 0.00% | 4.60 | 4.60 | 4.30 | 4.30 | 4.30 | 4.30 | 38,900 |   |  			
            | 12/5/2011 | 0.00 / 0.00% | 4.30 | 4.30 | 4.30 | 4.30 | 4.30 | 4.30 | 119,900 |   |  
            | 12/2/2011 | +0.20 / +4.88% | 4.20 | 4.30 | 4.10 | 4.30 | 4.10 | 4.30 | 8,900 |   |  			
            | 12/1/2011 | 0.00 / 0.00% | 4.20 | 4.20 | 4.10 | 4.10 | 4.10 | 4.10 | 31,000 |   |  
            | 11/30/2011 | -0.10 / -2.38% | 4.20 | 4.20 | 4.10 | 4.10 | 4.10 | 4.10 | 11,300 |   |  			
            | 11/29/2011 | 0.00 / 0.00% | 4.30 | 4.30 | 4.10 | 4.20 | 4.20 | 4.20 | 6,800 |   |  
            | 11/28/2011 | +0.10 / +2.44% | 4.10 | 4.30 | 4.10 | 4.20 | 4.20 | 4.20 | 30,200 |   |  			
            | 11/25/2011 | -0.10 / -2.38% | 4.10 | 4.10 | 4.00 | 4.10 | 4.08 | 4.10 | 16,100 |   |  
            | 11/24/2011 | -0.10 / -2.33% | 4.40 | 4.40 | 4.10 | 4.20 | 4.20 | 4.20 | 6,400 |   |  			
            | 11/23/2011 | +0.20 / +4.88% | 4.30 | 4.30 | 4.20 | 4.30 | 4.30 | 4.30 | 29,400 |   |  
            | 11/22/2011 | 0.00 / 0.00% | 4.30 | 4.30 | 4.10 | 4.10 | 4.10 | 4.10 | 25,200 |   |  			
            | 11/21/2011 | -0.30 / -6.82% | 4.50 | 4.50 | 4.10 | 4.10 | 4.10 | 4.10 | 4,800 |   |  
            | 11/18/2011 | +0.10 / +2.33% | 4.20 | 4.40 | 4.20 | 4.40 | 4.30 | 4.40 | 26,900 |   |  			
            | 11/17/2011 | -0.30 / -6.52% | 4.60 | 4.60 | 4.30 | 4.30 | 4.30 | 4.30 | 12,100 |   |  
            | 11/16/2011 | +0.30 / +6.98% | 4.40 | 4.60 | 4.40 | 4.60 | 4.60 | 4.60 | 20,600 |   |  			
            | 11/15/2011 | +0.10 / +2.38% | 4.40 | 4.40 | 4.30 | 4.30 | 4.30 | 4.30 | 22,000 |   |  
            | 11/14/2011 | -0.20 / -4.55% | 4.30 | 4.30 | 4.20 | 4.20 | 4.20 | 4.20 | 52,900 |   |  			
            | 11/11/2011 | 0.00 / 0.00% | 4.50 | 4.70 | 4.30 | 4.40 | 4.40 | 4.40 | 28,600 |   |  
            | 11/10/2011 | -0.20 / -4.35% | 4.60 | 4.60 | 4.40 | 4.40 | 4.40 | 4.40 | 28,500 |   |  			
            | 11/9/2011 | 0.00 / 0.00% | 4.60 | 4.70 | 4.60 | 4.60 | 4.60 | 4.60 | 9,700 |   |  
            | 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 |   |  |