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            | 
                    Closing price on 3/3/2009
                 |  |  
    
        |           
                
                    | Open | 8.60 |  
                    | High | 9.40 |  
                    | Low | 8.60 |  
                    | Volume | 1,060 |  
                    | Split-adjusted Price | 4.33 |  
                
             | 
 |  DTT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/3/2009 | +0.40 / +4.44% | 8.60 | 9.40 | 8.60 | 9.40 | 9.40 | 4.33 | 1,060 |   |  
            | 3/2/2009 | -0.20 / -2.17% | 9.20 | 9.20 | 9.00 | 9.00 | 9.00 | 4.15 | 150 |   |  			
            | 2/27/2009 | +0.20 / +2.22% | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 4.24 | 510 |   |  
            | 2/26/2009 | +0.20 / +2.27% | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 4.15 | 10 |   |  			
            | 2/25/2009 | +0.30 / +3.53% | 8.80 | 8.80 | 8.80 | 8.80 | 8.80 | 4.06 | 10 |   |  
            | 2/24/2009 | +0.30 / +3.66% | 7.90 | 8.50 | 7.80 | 8.50 | 8.50 | 3.92 | 1,270 |   |  			
            | 2/23/2009 | -0.40 / -4.65% | 8.20 | 8.20 | 8.20 | 8.20 | 8.20 | 3.78 | 110 |   |  
            | 2/20/2009 | -0.30 / -3.37% | 8.50 | 8.70 | 8.50 | 8.60 | 8.60 | 3.96 | 5,710 |   |  			
            | 2/19/2009 | -0.30 / -3.26% | 9.20 | 9.20 | 8.80 | 8.90 | 8.90 | 4.10 | 1,000 |   |  
            | 2/18/2009 | 0.00 / 0.00% | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 4.24 | 310 |   |  			
            | 2/17/2009 | +0.30 / +3.37% | 8.50 | 9.20 | 8.50 | 9.20 | 9.20 | 4.24 | 300 |   |  
            | 2/16/2009 | +0.30 / +3.49% | 8.60 | 8.90 | 8.60 | 8.90 | 8.90 | 4.10 | 1,010 |   |  			
            | 2/13/2009 | -0.40 / -4.44% | 9.40 | 9.40 | 8.60 | 8.60 | 8.60 | 3.96 | 1,110 |   |  
            | 2/12/2009 | -0.20 / -2.17% | 9.60 | 9.60 | 9.00 | 9.00 | 9.00 | 4.15 | 2,500 |   |  			
            | 2/11/2009 | -0.40 / -4.17% | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 4.24 | 100 |   |  
            | 2/10/2009 | +0.40 / +4.35% | 9.00 | 9.60 | 9.00 | 9.60 | 9.60 | 4.42 | 510 |   |  			
            | 2/9/2009 | -0.30 / -3.16% | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 4.24 | 590 |   |  
            | 2/6/2009 | 0.00 / 0.00% | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 4.38 | 10 |   |  			
            | 2/5/2009 | +0.30 / +3.26% | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 4.38 | 10 |   |  
            | 2/4/2009 | -0.30 / -3.16% | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 4.24 | 460 |   |  			
            | 2/3/2009 | -0.30 / -3.06% | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 4.38 | 10 |   |  
            | 2/2/2009 | +0.40 / +4.26% | 9.80 | 9.80 | 9.80 | 9.80 | 9.80 | 4.52 | 30 |   |  			
            | 1/23/2009 | -0.40 / -4.08% | 9.40 | 9.40 | 9.40 | 9.40 | 9.40 | 4.33 | 10 |   |  
            | 1/22/2009 | 0.00 / 0.00% | 9.80 | 9.80 | 9.80 | 9.80 | 9.80 | 4.52 | 10 |   |  			
            | 1/21/2009 | 0.00 / 0.00% | 9.80 | 9.80 | 9.80 | 9.80 | 9.80 | 4.52 | 200 |   |  
            | 1/20/2009 | +0.40 / +4.26% | 9.40 | 9.80 | 9.40 | 9.80 | 9.80 | 4.52 | 540 |   |  			
            | 1/19/2009 | 0.00 / 0.00% | 9.40 | 9.40 | 9.40 | 9.40 | 9.40 | 4.33 | 1,670 |   |  
            | 1/16/2009 | +0.10 / +1.08% | 9.40 | 9.40 | 9.40 | 9.40 | 9.40 | 4.33 | 990 |   |  			
            | 1/15/2009 | 0.00 / 0.00% | 9.50 | 9.50 | 9.30 | 9.30 | 9.30 | 4.29 | 7,460 |   |  
            | 1/14/2009 | -0.30 / -3.13% | 9.60 | 9.60 | 9.30 | 9.30 | 9.30 | 4.29 | 1,380 |   |  |