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                    Closing price on 3/19/2012
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                    | Open | 5.20 |  
                    | High | 5.40 |  
                    | Low | 4.80 |  
                    | Volume | 122,400 |  
                    | Split-adjusted Price | 2.49 |  
                
             | 
 |  VKC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/19/2012 | -0.20 / -4.00% | 5.20 | 5.40 | 4.80 | 4.80 | 4.97 | 2.49 | 122,400 |   |  
            | 3/16/2012 | -0.10 / -1.96% | 5.00 | 5.10 | 4.90 | 5.00 | 5.06 | 2.59 | 292,300 |   |  			
            | 3/15/2012 | +0.50 / +10.87% | 4.80 | 5.10 | 4.60 | 5.10 | 4.84 | 2.65 | 485,300 |   |  
            | 3/14/2012 | -0.30 / -6.12% | 4.80 | 5.00 | 4.60 | 4.60 | 4.79 | 2.39 | 297,500 |   |  			
            | 3/13/2012 | +0.20 / +4.26% | 4.80 | 4.90 | 4.70 | 4.90 | 4.80 | 2.54 | 82,900 |   |  
            | 3/12/2012 | +0.10 / +2.17% | 4.70 | 4.80 | 4.50 | 4.70 | 4.68 | 2.44 | 336,400 |   |  			
            | 3/9/2012 | -0.20 / -4.17% | 4.60 | 4.80 | 4.60 | 4.60 | 4.61 | 2.39 | 232,300 |   |  
            | 3/8/2012 | -0.30 / -5.88% | 5.10 | 5.10 | 4.80 | 4.80 | 4.90 | 2.49 | 174,000 |   |  			
            | 3/7/2012 | -0.10 / -1.92% | 5.40 | 5.40 | 5.10 | 5.10 | 5.15 | 2.65 | 340,100 |   |  
            | 3/6/2012 | -0.20 / -3.70% | 5.70 | 5.70 | 5.10 | 5.20 | 5.35 | 2.70 | 343,500 |   |  			
            | 3/5/2012 | +0.30 / +5.88% | 5.20 | 5.40 | 5.20 | 5.40 | 5.35 | 2.80 | 182,800 |   |  
            | 3/2/2012 | 0.00 / 0.00% | 5.00 | 5.20 | 5.00 | 5.10 | 5.06 | 2.65 | 235,100 |   |  			
            | 3/1/2012 | 0.00 / 0.00% | 5.00 | 5.10 | 4.80 | 5.10 | 4.98 | 2.65 | 205,600 |   |  
            | 2/29/2012 | +0.40 / +8.51% | 4.80 | 5.10 | 4.60 | 5.10 | 4.95 | 2.65 | 522,100 |   |  			
            | 2/28/2012 | 0.00 / 0.00% | 4.90 | 5.00 | 4.60 | 4.70 | 4.86 | 2.44 | 557,900 |   |  
            | 2/27/2012 | +0.30 / +6.82% | 4.60 | 4.70 | 4.60 | 4.70 | 4.69 | 2.44 | 263,400 |   |  			
            | 2/24/2012 | +0.20 / +4.76% | 4.30 | 4.40 | 4.30 | 4.40 | 4.37 | 2.28 | 381,200 |   |  
            | 2/23/2012 | +0.10 / +2.44% | 4.10 | 4.20 | 4.10 | 4.20 | 4.18 | 2.18 | 202,100 |   |  			
            | 2/22/2012 | +0.20 / +5.13% | 4.00 | 4.10 | 3.80 | 4.10 | 4.02 | 2.13 | 506,700 |   |  
            | 2/21/2012 | +0.20 / +5.41% | 3.90 | 3.90 | 3.70 | 3.90 | 3.87 | 2.02 | 559,100 |   |  			
            | 2/20/2012 | +0.10 / +2.78% | 3.60 | 3.70 | 3.60 | 3.70 | 3.67 | 1.92 | 293,600 |   |  
            | 2/17/2012 | +0.20 / +5.88% | 3.50 | 3.60 | 3.40 | 3.60 | 3.53 | 1.87 | 266,700 |   |  			
            | 2/16/2012 | 0.00 / 0.00% | 3.40 | 3.50 | 3.30 | 3.40 | 3.40 | 1.76 | 246,100 |   |  
            | 2/15/2012 | 0.00 / 0.00% | 3.50 | 3.50 | 3.30 | 3.40 | 3.44 | 1.76 | 193,100 |   |  			
            | 2/14/2012 | 0.00 / 0.00% | 3.40 | 3.60 | 3.40 | 3.40 | 3.43 | 1.76 | 247,200 |   |  
            | 2/13/2012 | -0.20 / -5.56% | 3.40 | 3.50 | 3.40 | 3.40 | 3.41 | 1.76 | 148,800 |   |  			
            | 2/10/2012 | -0.10 / -2.70% | 3.80 | 3.80 | 3.60 | 3.60 | 3.60 | 1.87 | 242,400 |   |  
            | 2/9/2012 | -0.10 / -2.63% | 3.90 | 3.90 | 3.70 | 3.70 | 3.80 | 1.92 | 442,400 |   |  			
            | 2/8/2012 | +0.10 / +2.70% | 3.70 | 3.80 | 3.70 | 3.80 | 3.76 | 1.97 | 274,400 |   |  
            | 2/7/2012 | +0.20 / +5.71% | 3.50 | 3.70 | 3.50 | 3.70 | 3.60 | 1.92 | 214,400 |   |  |