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            | 
                    Closing price on 2/28/2013
                 |  |  
    
        |           
                
                    | Open | 5.30 |  
                    | High | 5.50 |  
                    | Low | 5.20 |  
                    | Volume | 95,310 |  
                    | Split-adjusted Price | 1.88 |  
                
             | 
 |  VTO Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/28/2013 | +0.10 / +1.89% | 5.30 | 5.50 | 5.20 | 5.40 | 5.40 | 1.88 | 95,310 |   |  
            | 2/27/2013 | +0.10 / +1.92% | 5.00 | 5.30 | 5.00 | 5.30 | 5.30 | 1.85 | 217,760 |   |  			
            | 2/26/2013 | -0.30 / -5.45% | 5.40 | 5.50 | 5.20 | 5.20 | 5.20 | 1.81 | 626,620 |   |  
            | 2/25/2013 | -0.40 / -6.78% | 6.00 | 6.00 | 5.50 | 5.50 | 5.50 | 1.92 | 197,080 |   |  			
            | 2/22/2013 | +0.30 / +5.36% | 5.60 | 5.90 | 5.50 | 5.90 | 5.90 | 2.06 | 954,450 |   |  
            | 2/21/2013 | 0.00 / 0.00% | 5.80 | 5.90 | 5.60 | 5.60 | 5.60 | 1.95 | 1,204,790 |   |  			
            | 2/20/2013 | +0.30 / +5.66% | 5.30 | 5.60 | 5.20 | 5.60 | 5.60 | 1.95 | 916,480 |   |  
            | 2/19/2013 | +0.10 / +1.92% | 5.30 | 5.40 | 5.20 | 5.30 | 5.30 | 1.85 | 432,660 |   |  			
            | 2/18/2013 | +0.10 / +1.96% | 5.10 | 5.30 | 5.00 | 5.20 | 5.20 | 1.81 | 162,800 |   |  
            | 2/8/2013 | +0.20 / +4.08% | 5.00 | 5.10 | 5.00 | 5.10 | 5.10 | 1.78 | 61,460 |   |  			
            | 2/7/2013 | 0.00 / 0.00% | 5.00 | 5.10 | 4.90 | 4.90 | 4.90 | 1.71 | 102,130 |   |  
            | 2/6/2013 | +0.20 / +4.26% | 4.80 | 4.90 | 4.70 | 4.90 | 4.90 | 1.71 | 67,380 |   |  			
            | 2/5/2013 | -0.20 / -4.08% | 4.80 | 4.90 | 4.60 | 4.70 | 4.70 | 1.64 | 49,090 |   |  
            | 2/4/2013 | 0.00 / 0.00% | 4.90 | 5.00 | 4.80 | 4.90 | 4.90 | 1.71 | 32,810 |   |  			
            | 2/1/2013 | 0.00 / 0.00% | 4.90 | 4.90 | 4.80 | 4.90 | 4.90 | 1.71 | 32,220 |   |  
            | 1/31/2013 | 0.00 / 0.00% | 4.90 | 5.00 | 4.80 | 4.90 | 4.90 | 1.71 | 80,950 |   |  			
            | 1/30/2013 | 0.00 / 0.00% | 4.90 | 5.20 | 4.80 | 4.90 | 4.90 | 1.71 | 225,530 |   |  
            | 1/29/2013 | 0.00 / 0.00% | 4.80 | 5.00 | 4.80 | 4.90 | 4.90 | 1.71 | 167,500 |   |  			
            | 1/28/2013 | 0.00 / 0.00% | 4.90 | 5.10 | 4.80 | 4.90 | 4.90 | 1.71 | 403,180 |   |  
            | 1/25/2013 | 0.00 / 0.00% | 5.10 | 5.10 | 4.80 | 4.90 | 4.90 | 1.71 | 205,350 |   |  			
            | 1/24/2013 | +0.10 / +2.08% | 4.80 | 5.00 | 4.80 | 4.90 | 4.90 | 1.71 | 87,930 |   |  
            | 1/23/2013 | 0.00 / 0.00% | 4.90 | 4.90 | 4.70 | 4.80 | 4.80 | 1.68 | 98,770 |   |  			
            | 1/22/2013 | -0.10 / -2.04% | 4.80 | 4.90 | 4.70 | 4.80 | 4.80 | 1.68 | 273,870 |   |  
            | 1/21/2013 | -0.10 / -2.00% | 4.90 | 5.00 | 4.80 | 4.90 | 4.90 | 1.71 | 224,250 |   |  			
            | 1/18/2013 | -0.30 / -5.66% | 5.20 | 5.20 | 5.00 | 5.00 | 5.00 | 1.75 | 504,080 |   |  
            | 1/17/2013 | +0.30 / +6.00% | 5.00 | 5.30 | 5.00 | 5.30 | 5.30 | 1.85 | 527,840 |   |  			
            | 1/16/2013 | +0.30 / +6.38% | 4.70 | 5.00 | 4.70 | 5.00 | 5.00 | 1.75 | 454,670 |   |  
            | 1/15/2013 | +0.20 / +4.44% | 4.50 | 4.80 | 4.40 | 4.70 | 4.70 | 1.64 | 203,880 |   |  			
            | 1/14/2013 | 0.00 / 0.00% | 4.50 | 4.60 | 4.40 | 4.50 | 4.50 | 1.57 | 95,880 |   |  
            | 1/11/2013 | 0.00 / 0.00% | 4.60 | 4.60 | 4.50 | 4.50 | 4.50 | 1.57 | 70,880 |   |  |