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                    Closing price on 6/18/2012
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                    | Open | 5.50 |  
                    | High | 5.50 |  
                    | Low | 5.20 |  
                    | Volume | 27,300 |  
                    | Split-adjusted Price | 5.40 |  
                
             | 
 |  V15 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/18/2012 | 0.00 / 0.00% | 5.50 | 5.50 | 5.20 | 5.40 | 5.40 | 5.40 | 27,300 |   |  
            | 6/15/2012 | +0.20 / +3.85% | 5.30 | 5.40 | 5.30 | 5.40 | 5.35 | 5.40 | 7,500 |   |  			
            | 6/14/2012 | -0.20 / -3.70% | 5.50 | 5.50 | 5.10 | 5.20 | 5.20 | 5.20 | 38,600 |   |  
            | 6/13/2012 | +0.10 / +1.89% | 5.50 | 5.50 | 5.20 | 5.40 | 5.40 | 5.40 | 8,700 |   |  			
            | 6/12/2012 | -0.30 / -5.36% | 5.40 | 5.40 | 5.30 | 5.30 | 5.30 | 5.30 | 42,700 |   |  
            | 6/11/2012 | 0.00 / 0.00% | 5.80 | 5.80 | 5.60 | 5.60 | 5.60 | 5.60 | 4,000 |   |  			
            | 6/8/2012 | +0.10 / +1.82% | 5.60 | 5.70 | 5.40 | 5.60 | 5.50 | 5.60 | 41,600 |   |  
            | 6/7/2012 | +0.30 / +5.77% | 5.10 | 5.50 | 5.10 | 5.50 | 5.50 | 5.50 | 120,700 |   |  			
            | 6/6/2012 | +0.10 / +1.96% | 4.90 | 5.30 | 4.90 | 5.20 | 5.20 | 5.20 | 24,200 |   |  
            | 6/5/2012 | +0.20 / +4.08% | 4.90 | 5.10 | 4.90 | 5.10 | 5.10 | 5.10 | 54,700 |   |  			
            | 6/4/2012 | -0.30 / -5.77% | 5.00 | 5.00 | 4.90 | 4.90 | 4.90 | 4.90 | 81,200 |   |  
            | 6/1/2012 | 0.00 / 0.00% | 5.30 | 5.30 | 5.00 | 5.20 | 5.20 | 5.20 | 21,900 |   |  			
            | 5/31/2012 | -0.30 / -5.45% | 5.30 | 5.30 | 5.20 | 5.20 | 5.20 | 5.20 | 37,600 |   |  
            | 5/30/2012 | 0.00 / 0.00% | 5.50 | 5.50 | 5.30 | 5.50 | 5.50 | 5.50 | 25,200 |   |  			
            | 5/29/2012 | 0.00 / 0.00% | 5.30 | 5.50 | 5.30 | 5.50 | 5.50 | 5.50 | 26,100 |   |  
            | 5/28/2012 | +0.20 / +3.77% | 5.60 | 5.60 | 5.30 | 5.50 | 5.50 | 5.50 | 83,500 |   |  			
            | 5/25/2012 | +0.20 / +3.92% | 5.30 | 5.30 | 5.20 | 5.30 | 5.28 | 5.30 | 24,700 |   |  
            | 5/24/2012 | -0.10 / -1.92% | 5.00 | 5.20 | 4.90 | 5.10 | 5.10 | 5.10 | 77,900 |   |  			
            | 5/23/2012 | -0.30 / -5.45% | 5.30 | 5.60 | 5.20 | 5.20 | 5.20 | 5.20 | 22,500 |   |  
            | 5/22/2012 | +0.30 / +5.77% | 5.40 | 5.50 | 5.30 | 5.50 | 5.50 | 5.50 | 105,100 |   |  			
            | 5/21/2012 | +0.20 / +4.00% | 5.20 | 5.20 | 5.10 | 5.20 | 5.20 | 5.20 | 15,700 |   |  
            | 5/18/2012 | -0.30 / -5.66% | 5.00 | 5.10 | 4.90 | 5.00 | 5.00 | 5.00 | 99,000 |   |  			
            | 5/17/2012 | -0.30 / -5.36% | 5.50 | 5.60 | 5.30 | 5.30 | 5.30 | 5.30 | 55,900 |   |  
            | 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 |   |  |