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            | 
                    Closing price on 2/27/2012
                 |  |  
    
        |           
                
                    | Open | 4.70 |  
                    | High | 4.90 |  
                    | Low | 4.50 |  
                    | Volume | 201,600 |  
                    | Split-adjusted Price | 4.90 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/27/2012 | +0.40 / +8.89% | 4.70 | 4.90 | 4.50 | 4.90 | 4.90 | 4.90 | 201,600 |   |  
            | 2/24/2012 | +0.10 / +2.27% | 4.40 | 4.60 | 4.40 | 4.50 | 4.40 | 4.50 | 158,300 |   |  			
            | 2/23/2012 | -0.60 / -12.00% | 4.40 | 4.40 | 4.00 | 4.40 | 4.40 | 4.40 | 233,200 |   |  
            | 2/22/2012 | +0.30 / +6.38% | 4.70 | 5.10 | 4.60 | 5.00 | 5.00 | 5.00 | 207,100 |   |  			
            | 2/21/2012 | -0.10 / -2.08% | 5.00 | 5.00 | 4.60 | 4.70 | 4.70 | 4.70 | 249,400 |   |  
            | 2/20/2012 | +0.20 / +4.35% | 4.70 | 4.80 | 4.70 | 4.80 | 4.80 | 4.80 | 191,900 |   |  			
            | 2/17/2012 | +0.40 / +9.52% | 4.30 | 4.60 | 4.30 | 4.60 | 4.45 | 4.60 | 212,800 |   |  
            | 2/16/2012 | -0.10 / -2.33% | 4.40 | 4.40 | 4.20 | 4.20 | 4.20 | 4.20 | 50,700 |   |  			
            | 2/15/2012 | +0.20 / +4.88% | 4.30 | 4.30 | 4.20 | 4.30 | 4.30 | 4.30 | 364,800 |   |  
            | 2/14/2012 | +0.20 / +5.13% | 4.10 | 4.10 | 4.10 | 4.10 | 4.10 | 4.10 | 1,200 |   |  			
            | 2/13/2012 | +0.20 / +5.41% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 10,800 |   |  
            | 2/10/2012 | -0.20 / -5.13% | 3.80 | 3.90 | 3.70 | 3.70 | 3.90 | 3.70 | 70,000 |   |  			
            | 2/9/2012 | 0.00 / 0.00% | 4.00 | 4.10 | 3.80 | 3.90 | 3.90 | 3.90 | 71,300 |   |  
            | 2/8/2012 | +0.10 / +2.63% | 3.80 | 3.90 | 3.80 | 3.90 | 3.90 | 3.90 | 82,200 |   |  			
            | 2/7/2012 | +0.10 / +2.70% | 3.60 | 3.80 | 3.60 | 3.80 | 3.80 | 3.80 | 50,400 |   |  
            | 2/6/2012 | -0.10 / -2.63% | 3.70 | 3.70 | 3.60 | 3.70 | 3.70 | 3.70 | 37,500 |   |  			
            | 2/3/2012 | +0.10 / +2.70% | 3.90 | 3.90 | 3.50 | 3.80 | 3.70 | 3.80 | 129,200 |   |  
            | 2/2/2012 | +0.20 / +5.71% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 1,300 |   |  			
            | 2/1/2012 | +0.20 / +6.06% | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | 6,200 |   |  
            | 1/31/2012 | +0.10 / +3.13% | 3.20 | 3.30 | 3.20 | 3.30 | 3.30 | 3.30 | 51,100 |   |  			
            | 1/30/2012 | +0.30 / +10.34% | 3.10 | 3.20 | 3.10 | 3.20 | 3.20 | 3.20 | 22,000 |   |  
            | 1/20/2012 | -0.10 / -3.33% | 3.30 | 3.30 | 2.90 | 2.90 | 3.00 | 2.90 | 15,100 |   |  			
            | 1/19/2012 | +0.10 / +3.45% | 3.10 | 3.10 | 3.00 | 3.00 | 3.00 | 3.00 | 27,700 |   |  
            | 1/18/2012 | 0.00 / 0.00% | 2.80 | 2.90 | 2.80 | 2.90 | 2.90 | 2.90 | 11,800 |   |  			
            | 1/17/2012 | -0.10 / -3.33% | 3.10 | 3.10 | 2.80 | 2.90 | 2.90 | 2.90 | 11,000 |   |  
            | 1/16/2012 | 0.00 / 0.00% | 3.10 | 3.10 | 3.00 | 3.00 | 3.00 | 3.00 | 9,700 |   |  			
            | 1/13/2012 | +0.20 / +7.14% | 2.80 | 3.10 | 2.80 | 3.00 | 2.80 | 3.00 | 23,400 |   |  
            | 1/12/2012 | -0.10 / -3.45% | 2.90 | 2.90 | 2.80 | 2.80 | 2.80 | 2.80 | 6,500 |   |  			
            | 1/11/2012 | -0.10 / -3.33% | 3.00 | 3.10 | 2.90 | 2.90 | 2.90 | 2.90 | 28,100 |   |  
            | 1/10/2012 | +0.10 / +3.45% | 3.00 | 3.10 | 2.90 | 3.00 | 3.00 | 3.00 | 22,700 |   |  |