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            | 
                    Closing price on 4/3/2012
                 |  |  
    
        |           
                
                    | Open | 15.50 |  
                    | High | 15.50 |  
                    | Low | 15.30 |  
                    | Volume | 1,500 |  
                    | Split-adjusted Price | 1.77 |  
                
             | 
 |  DBT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/3/2012 | -0.10 / -0.65% | 15.50 | 15.50 | 15.30 | 15.30 | 15.43 | 1.77 | 1,500 |   |  
            | 3/30/2012 | -0.10 / -0.65% | 15.40 | 15.40 | 15.40 | 15.40 | 15.40 | 1.78 | 500 |   |  			
            | 3/29/2012 | +0.20 / +1.31% | 15.50 | 15.50 | 15.50 | 15.50 | 15.50 | 1.79 | 1,000 |   |  
            | 3/28/2012 | -0.20 / -1.29% | 15.30 | 15.30 | 15.30 | 15.30 | 15.30 | 1.77 | 300 |   |  			
            | 3/27/2012 | -0.50 / -3.13% | 15.50 | 15.50 | 15.50 | 15.50 | 15.50 | 1.79 | 1,300 |   |  
            | 3/26/2012 | +0.70 / +4.58% | 15.30 | 16.00 | 15.30 | 16.00 | 15.70 | 1.85 | 4,300 |   |  			
            | 3/23/2012 | +0.10 / +0.66% | 15.30 | 15.30 | 15.30 | 15.30 | 15.30 | 1.77 | 0 |   |  
            | 3/22/2012 | +0.20 / +1.33% | 16.00 | 16.00 | 15.20 | 15.20 | 15.29 | 1.76 | 900 |   |  			
            | 3/21/2012 | -1.20 / -7.41% | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 1.73 | 400 |   |  
            | 3/20/2012 | +0.20 / +1.25% | 16.10 | 16.20 | 16.10 | 16.20 | 16.14 | 1.87 | 700 |   |  			
            | 3/19/2012 | +0.90 / +5.96% | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 | 1.85 | 300 |   |  
            | 3/16/2012 | +0.10 / +0.67% | 15.10 | 15.10 | 15.10 | 15.10 | 15.10 | 1.75 | 700 |   |  			
            | 3/15/2012 | 0.00 / 0.00% | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 1.73 | 0 |   |  
            | 3/14/2012 | 0.00 / 0.00% | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 1.73 | 3,500 |   |  			
            | 3/13/2012 | -0.90 / -5.66% | 16.00 | 16.00 | 15.00 | 15.00 | 15.16 | 1.73 | 3,500 |   |  
            | 3/12/2012 | -0.10 / -0.63% | 15.90 | 15.90 | 15.90 | 15.90 | 15.90 | 1.84 | 200 |   |  			
            | 3/9/2012 | -0.50 / -3.03% | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 | 1.73 | 1,200 |   |  
            | 3/8/2012 | -0.50 / -2.94% | 17.00 | 17.00 | 16.20 | 16.50 | 16.38 | 1.79 | 1,700 |   |  			
            | 3/7/2012 | +0.50 / +3.03% | 16.20 | 17.00 | 16.20 | 17.00 | 16.87 | 1.84 | 600 |   |  
            | 3/6/2012 | -0.60 / -3.51% | 16.50 | 16.50 | 16.50 | 16.50 | 16.50 | 1.79 | 11,500 |   |  			
            | 3/5/2012 | +0.80 / +4.91% | 16.00 | 17.10 | 16.00 | 17.10 | 16.55 | 1.85 | 3,500 |   |  
            | 3/2/2012 | +1.10 / +7.24% | 16.20 | 16.30 | 16.20 | 16.30 | 16.28 | 1.77 | 9,000 |   |  			
            | 3/1/2012 | -0.80 / -5.00% | 15.50 | 15.50 | 15.20 | 15.20 | 15.32 | 1.65 | 500 |   |  
            | 2/29/2012 | +0.20 / +1.27% | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 | 1.73 | 100 |   |  			
            | 2/28/2012 | 0.00 / 0.00% | 15.80 | 15.80 | 15.80 | 15.80 | 15.80 | 1.71 | 0 |   |  
            | 2/27/2012 | +0.20 / +1.28% | 15.80 | 15.80 | 15.80 | 15.80 | 15.80 | 1.71 | 2,000 |   |  			
            | 2/24/2012 | +0.10 / +0.65% | 15.60 | 15.60 | 15.60 | 15.60 | 15.60 | 1.69 | 700 |   |  
            | 2/23/2012 | +0.30 / +1.97% | 16.00 | 16.00 | 15.50 | 15.50 | 15.92 | 1.68 | 1,200 |   |  			
            | 2/22/2012 | -0.10 / -0.65% | 15.50 | 15.50 | 15.20 | 15.20 | 15.30 | 1.65 | 1,500 |   |  
            | 2/21/2012 | +0.10 / +0.66% | 15.20 | 15.60 | 15.20 | 15.30 | 15.38 | 1.66 | 4,700 |   |  |