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                    Closing price on 9/15/2011
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                    | Open | 30.70 |  
                    | High | 30.70 |  
                    | Low | 30.50 |  
                    | Volume | 1,130 |  
                    | Split-adjusted Price | 1.70 |  
                
             | 
 |  VSC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/15/2011 | +0.10 / +0.33% | 30.70 | 30.70 | 30.50 | 30.70 | 30.70 | 1.70 | 1,130 |   |  
            | 9/14/2011 | -0.90 / -2.86% | 31.50 | 31.50 | 30.60 | 30.60 | 30.60 | 1.70 | 5,400 |   |  			
            | 9/13/2011 | +0.50 / +1.61% | 31.00 | 31.90 | 31.00 | 31.50 | 31.50 | 1.75 | 560 |   |  
            | 9/12/2011 | 0.00 / 0.00% | 30.50 | 31.00 | 30.50 | 31.00 | 31.00 | 1.72 | 520 |   |  			
            | 9/9/2011 | +0.30 / +0.98% | 31.00 | 31.00 | 30.80 | 31.00 | 31.00 | 1.72 | 3,050 |   |  
            | 9/8/2011 | -0.20 / -0.65% | 31.00 | 32.00 | 30.70 | 30.70 | 30.70 | 1.70 | 10,100 |   |  			
            | 9/7/2011 | -0.10 / -0.32% | 30.70 | 31.00 | 30.70 | 30.90 | 30.90 | 1.72 | 5,410 |   |  
            | 9/6/2011 | -0.40 / -1.27% | 30.60 | 31.00 | 30.60 | 31.00 | 31.00 | 1.72 | 5,750 |   |  			
            | 9/5/2011 | 0.00 / 0.00% | 30.60 | 31.40 | 30.60 | 31.40 | 31.40 | 1.74 | 3,730 |   |  
            | 9/1/2011 | +0.30 / +0.96% | 31.80 | 31.80 | 30.60 | 31.40 | 31.40 | 1.74 | 7,520 |   |  			
            | 8/31/2011 | +0.10 / +0.32% | 31.90 | 31.90 | 31.10 | 31.10 | 31.10 | 1.73 | 2,920 |   |  
            | 8/30/2011 | 0.00 / 0.00% | 30.30 | 31.00 | 30.30 | 31.00 | 31.00 | 1.72 | 14,320 |   |  			
            | 8/29/2011 | -1.90 / -5.78% | 32.00 | 32.00 | 30.30 | 31.00 | 31.00 | 1.72 | 11,070 |   |  
            | 8/26/2011 | +0.50 / +1.54% | 32.70 | 32.90 | 32.50 | 32.90 | 32.90 | 1.72 | 8,630 |   |  			
            | 8/25/2011 | +0.10 / +0.31% | 32.10 | 32.50 | 32.10 | 32.40 | 32.40 | 1.69 | 4,420 |   |  
            | 8/24/2011 | +0.40 / +1.25% | 32.00 | 32.50 | 32.00 | 32.30 | 32.30 | 1.68 | 3,920 |   |  			
            | 8/23/2011 | -0.10 / -0.31% | 32.00 | 32.00 | 31.70 | 31.90 | 31.90 | 1.66 | 5,620 |   |  
            | 8/22/2011 | +0.50 / +1.59% | 31.50 | 32.00 | 31.50 | 32.00 | 32.00 | 1.67 | 7,600 |   |  			
            | 8/19/2011 | 0.00 / 0.00% | 30.60 | 31.50 | 30.60 | 31.50 | 31.50 | 1.64 | 3,610 |   |  
            | 8/18/2011 | 0.00 / 0.00% | 31.80 | 31.90 | 31.50 | 31.50 | 31.50 | 1.64 | 2,580 |   |  			
            | 8/17/2011 | +0.60 / +1.94% | 32.00 | 32.00 | 30.90 | 31.50 | 31.50 | 1.64 | 1,360 |   |  
            | 8/16/2011 | -1.10 / -3.44% | 30.90 | 32.00 | 30.90 | 30.90 | 30.90 | 1.61 | 5,620 |   |  			
            | 8/15/2011 | +0.90 / +2.89% | 31.50 | 32.00 | 30.50 | 32.00 | 32.00 | 1.67 | 1,060 |   |  
            | 8/12/2011 | +0.70 / +2.30% | 30.40 | 31.90 | 30.40 | 31.10 | 31.10 | 1.62 | 860 |   |  			
            | 8/11/2011 | -1.50 / -4.70% | 31.60 | 31.60 | 30.40 | 30.40 | 30.40 | 1.59 | 110 |   |  
            | 8/10/2011 | +1.00 / +3.24% | 31.90 | 31.90 | 31.90 | 31.90 | 31.90 | 1.66 | 10 |   |  			
            | 8/9/2011 | 0.00 / 0.00% | 30.00 | 30.90 | 30.00 | 30.90 | 30.90 | 1.61 | 5,210 |   |  
            | 8/8/2011 | -0.10 / -0.32% | 31.00 | 31.00 | 30.90 | 30.90 | 30.90 | 1.61 | 10,100 |   |  			
            | 8/5/2011 | -0.50 / -1.59% | 31.50 | 31.50 | 31.00 | 31.00 | 31.00 | 1.62 | 6,010 |   |  
            | 8/4/2011 | +0.40 / +1.29% | 31.20 | 31.50 | 31.20 | 31.50 | 31.50 | 1.64 | 1,250 |   |  |