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                    Closing price on 5/16/2012
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        |           
                
                    | Open | 5.40 |  
                    | High | 5.60 |  
                    | Low | 5.40 |  
                    | Volume | 93,000 |  
                    | Split-adjusted Price | 5.60 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/16/2012 | +0.20 / +3.70% | 5.40 | 5.60 | 5.40 | 5.60 | 5.60 | 5.60 | 93,000 |   |  
            | 5/15/2012 | -0.40 / -6.90% | 5.90 | 5.90 | 5.40 | 5.40 | 5.40 | 5.40 | 241,900 |   |  			
            | 5/14/2012 | -0.40 / -6.45% | 6.00 | 6.30 | 5.80 | 5.80 | 5.80 | 5.80 | 134,400 |   |  
            | 5/11/2012 | -0.50 / -7.46% | 6.60 | 6.60 | 6.20 | 6.20 | 6.40 | 6.20 | 259,600 |   |  			
            | 5/10/2012 | -0.10 / -1.47% | 7.00 | 7.00 | 6.50 | 6.70 | 6.70 | 6.70 | 128,900 |   |  
            | 5/9/2012 | +0.30 / +4.62% | 6.30 | 6.80 | 6.30 | 6.80 | 6.80 | 6.80 | 146,900 |   |  			
            | 5/8/2012 | -0.20 / -2.99% | 6.80 | 6.90 | 6.50 | 6.50 | 6.50 | 6.50 | 283,500 |   |  
            | 5/7/2012 | +0.40 / +6.35% | 6.50 | 6.70 | 6.50 | 6.70 | 6.70 | 6.70 | 249,700 |   |  			
            | 5/4/2012 | 0.00 / 0.00% | 6.20 | 6.40 | 6.10 | 6.30 | 6.30 | 6.30 | 157,100 |   |  
            | 5/3/2012 | 0.00 / 0.00% | 6.20 | 6.30 | 6.00 | 6.30 | 6.30 | 6.30 | 187,900 |   |  			
            | 5/2/2012 | +0.40 / +6.78% | 6.00 | 6.30 | 6.00 | 6.30 | 6.30 | 6.30 | 622,900 |   |  
            | 4/27/2012 | +0.10 / +1.72% | 5.60 | 5.90 | 5.60 | 5.90 | 5.80 | 5.90 | 142,850 |   |  			
            | 4/26/2012 | +0.10 / +1.75% | 6.00 | 6.00 | 5.60 | 5.80 | 5.80 | 5.80 | 58,500 |   |  
            | 4/25/2012 | +0.20 / +3.64% | 5.70 | 5.80 | 5.70 | 5.70 | 5.70 | 5.70 | 195,500 |   |  			
            | 4/24/2012 | -0.20 / -3.51% | 5.60 | 5.80 | 5.40 | 5.50 | 5.50 | 5.50 | 169,000 |   |  
            | 4/23/2012 | 0.00 / 0.00% | 5.80 | 5.90 | 5.50 | 5.70 | 5.70 | 5.70 | 224,600 |   |  			
            | 4/20/2012 | 0.00 / 0.00% | 5.70 | 5.90 | 5.50 | 5.70 | 5.70 | 5.70 | 147,100 |   |  
            | 4/19/2012 | -0.30 / -5.00% | 6.10 | 6.20 | 5.70 | 5.70 | 5.70 | 5.70 | 176,700 |   |  			
            | 4/18/2012 | +0.30 / +5.26% | 5.70 | 6.20 | 5.70 | 6.00 | 6.00 | 6.00 | 508,300 |   |  
            | 4/17/2012 | 0.00 / 0.00% | 5.70 | 5.80 | 5.50 | 5.70 | 5.70 | 5.70 | 306,200 |   |  			
            | 4/16/2012 | +0.20 / +3.64% | 5.50 | 5.80 | 5.40 | 5.70 | 5.70 | 5.70 | 148,700 |   |  
            | 4/13/2012 | -0.20 / -3.51% | 5.90 | 5.90 | 5.50 | 5.50 | 5.70 | 5.50 | 146,700 |   |  			
            | 4/12/2012 | +0.30 / +5.56% | 5.60 | 5.70 | 5.60 | 5.70 | 5.70 | 5.70 | 441,700 |   |  
            | 4/11/2012 | +0.40 / +8.00% | 5.20 | 5.40 | 5.00 | 5.40 | 5.40 | 5.40 | 324,250 |   |  			
            | 4/10/2012 | -0.10 / -1.96% | 5.10 | 5.30 | 5.00 | 5.00 | 5.00 | 5.00 | 52,500 |   |  
            | 4/9/2012 | +0.10 / +2.00% | 5.10 | 5.30 | 4.90 | 5.10 | 5.10 | 5.10 | 137,800 |   |  			
            | 4/6/2012 | 0.00 / 0.00% | 5.10 | 5.20 | 5.00 | 5.00 | 5.00 | 5.00 | 99,800 |   |  
            | 4/5/2012 | +0.10 / +2.04% | 5.00 | 5.10 | 4.90 | 5.00 | 5.00 | 5.00 | 96,200 |   |  			
            | 4/4/2012 | -0.20 / -3.92% | 5.20 | 5.20 | 4.80 | 4.90 | 4.90 | 4.90 | 87,500 |   |  
            | 4/3/2012 | +0.10 / +2.00% | 4.80 | 5.20 | 4.70 | 5.10 | 5.10 | 5.10 | 268,700 |   |  |