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                    Closing price on 9/16/2011
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                    | Open | 7.00 |  
                    | High | 7.00 |  
                    | Low | 6.60 |  
                    | Volume | 105,800 |  
                    | Split-adjusted Price | 6.60 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/16/2011 | -0.30 / -4.35% | 7.00 | 7.00 | 6.60 | 6.60 | 6.90 | 6.60 | 105,800 |   |  
            | 9/15/2011 | 0.00 / 0.00% | 7.00 | 7.20 | 6.90 | 6.90 | 6.90 | 6.90 | 199,500 |   |  			
            | 9/14/2011 | -0.20 / -2.82% | 7.50 | 7.50 | 6.90 | 6.90 | 6.90 | 6.90 | 413,300 |   |  
            | 9/13/2011 | +0.40 / +5.97% | 7.10 | 7.10 | 7.10 | 7.10 | 7.10 | 7.10 | 120,500 |   |  			
            | 9/12/2011 | +0.30 / +4.69% | 6.40 | 6.70 | 6.40 | 6.70 | 6.70 | 6.70 | 170,900 |   |  
            | 9/9/2011 | +0.10 / +1.59% | 6.40 | 6.50 | 6.10 | 6.40 | 6.30 | 6.40 | 119,000 |   |  			
            | 9/8/2011 | -0.10 / -1.56% | 6.70 | 6.70 | 5.90 | 6.30 | 6.30 | 6.30 | 92,800 |   |  
            | 9/7/2011 | +0.50 / +8.47% | 6.20 | 6.40 | 6.10 | 6.40 | 6.40 | 6.40 | 86,700 |   |  			
            | 9/6/2011 | -0.40 / -6.35% | 6.10 | 6.10 | 5.90 | 5.90 | 5.90 | 5.90 | 179,800 |   |  
            | 9/5/2011 | +0.30 / +5.00% | 6.20 | 6.30 | 6.00 | 6.30 | 6.30 | 6.30 | 236,500 |   |  			
            | 9/1/2011 | +0.40 / +7.14% | 5.70 | 6.00 | 5.70 | 6.00 | 5.85 | 6.00 | 132,300 |   |  
            | 8/31/2011 | +0.10 / +1.82% | 5.60 | 5.80 | 5.60 | 5.60 | 5.60 | 5.60 | 107,300 |   |  			
            | 8/30/2011 | +0.20 / +3.77% | 5.50 | 5.60 | 5.40 | 5.50 | 5.50 | 5.50 | 140,200 |   |  
            | 8/29/2011 | +0.30 / +6.00% | 5.10 | 5.30 | 5.10 | 5.30 | 5.30 | 5.30 | 68,300 |   |  			
            | 8/26/2011 | -0.10 / -1.96% | 5.00 | 5.10 | 5.00 | 5.00 | 5.10 | 5.00 | 41,800 |   |  
            | 8/25/2011 | -0.10 / -1.92% | 5.20 | 5.20 | 5.00 | 5.10 | 5.10 | 5.10 | 55,400 |   |  			
            | 8/24/2011 | -0.10 / -1.89% | 5.40 | 5.40 | 5.20 | 5.20 | 5.20 | 5.20 | 29,000 |   |  
            | 8/23/2011 | +0.10 / +1.92% | 5.50 | 5.50 | 5.10 | 5.30 | 5.30 | 5.30 | 75,800 |   |  			
            | 8/22/2011 | +0.40 / +8.33% | 5.00 | 5.20 | 5.00 | 5.20 | 5.20 | 5.20 | 97,700 |   |  
            | 8/19/2011 | -0.20 / -4.00% | 5.00 | 5.00 | 4.80 | 4.80 | 5.00 | 4.80 | 22,300 |   |  			
            | 8/18/2011 | 0.00 / 0.00% | 5.30 | 5.30 | 5.00 | 5.00 | 5.00 | 5.00 | 126,200 |   |  
            | 8/17/2011 | +0.10 / +2.04% | 5.00 | 5.20 | 4.90 | 5.00 | 5.00 | 5.00 | 69,400 |   |  			
            | 8/16/2011 | +0.10 / +2.08% | 4.90 | 5.00 | 4.80 | 4.90 | 4.90 | 4.90 | 14,500 |   |  
            | 8/15/2011 | 0.00 / 0.00% | 4.80 | 4.90 | 4.80 | 4.80 | 4.80 | 4.80 | 12,500 |   |  			
            | 8/12/2011 | +0.10 / +2.13% | 4.80 | 4.80 | 4.70 | 4.80 | 4.70 | 4.80 | 11,900 |   |  
            | 8/11/2011 | -0.10 / -2.08% | 4.50 | 4.70 | 4.50 | 4.70 | 4.70 | 4.70 | 7,700 |   |  			
            | 8/10/2011 | +0.10 / +2.13% | 4.80 | 4.90 | 4.60 | 4.80 | 4.80 | 4.80 | 40,700 |   |  
            | 8/9/2011 | -0.20 / -4.08% | 4.90 | 4.90 | 4.70 | 4.70 | 4.70 | 4.70 | 65,300 |   |  			
            | 8/8/2011 | -0.20 / -3.92% | 5.10 | 5.10 | 4.90 | 4.90 | 4.90 | 4.90 | 25,500 |   |  
            | 8/5/2011 | -0.30 / -5.56% | 5.30 | 5.40 | 5.10 | 5.10 | 5.40 | 5.10 | 103,200 |   |  |