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                    Closing price on 5/24/2010
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                    | Open | 20.70 |  
                    | High | 23.00 |  
                    | Low | 20.70 |  
                    | Volume | 8,600 |  
                    | Split-adjusted Price | 4.89 |  
                
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 |  DC4 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/24/2010 | +1.40 / +7.25% | 20.70 | 23.00 | 20.70 | 20.70 | 21.28 | 4.89 | 8,600 |   |  
            | 5/21/2010 | -2.10 / -9.81% | 19.40 | 22.20 | 19.30 | 19.30 | 19.37 | 4.56 | 44,400 |   |  			
            | 5/20/2010 | +0.30 / +1.42% | 19.80 | 23.90 | 19.80 | 21.40 | 20.66 | 5.06 | 27,100 |   |  
            | 5/19/2010 | -1.50 / -6.64% | 23.50 | 26.10 | 21.10 | 21.10 | 21.23 | 4.99 | 38,200 |   |  			
            | 5/18/2010 | -0.80 / -3.42% | 24.40 | 27.10 | 22.60 | 22.60 | 22.60 | 5.34 | 9,900 |   |  
            | 5/17/2010 | -0.60 / -2.50% | 24.50 | 27.20 | 23.40 | 23.40 | 23.62 | 5.53 | 5,800 |   |  			
            | 5/14/2010 | +0.70 / +3.00% | 24.00 | 26.70 | 24.00 | 24.00 | 24.68 | 5.67 | 2,700 |   |  
            | 5/13/2010 | +0.30 / +1.30% | 23.00 | 26.70 | 23.00 | 23.30 | 23.65 | 5.51 | 17,500 |   |  			
            | 5/12/2010 | -1.70 / -6.88% | 23.60 | 26.70 | 23.00 | 23.00 | 23.24 | 5.44 | 22,800 |   |  
            | 5/11/2010 | +0.70 / +2.92% | 25.00 | 28.30 | 24.70 | 24.70 | 25.68 | 5.84 | 31,300 |   |  			
            | 5/10/2010 | -1.00 / -4.00% | 25.00 | 27.80 | 24.00 | 24.00 | 24.07 | 5.67 | 35,700 |   |  
            | 5/7/2010 | -1.00 / -3.85% | 25.90 | 28.90 | 25.00 | 25.00 | 25.10 | 5.91 | 43,200 |   |  			
            | 5/6/2010 | +0.20 / +0.78% | 25.70 | 29.30 | 25.70 | 26.00 | 25.91 | 6.15 | 65,000 |   |  
            | 5/5/2010 | -0.60 / -2.27% | 26.50 | 29.40 | 25.80 | 25.80 | 26.88 | 6.10 | 27,100 |   |  			
            | 5/4/2010 | +1.00 / +3.94% | 26.20 | 29.30 | 26.20 | 26.40 | 26.26 | 6.24 | 62,900 |   |  
            | 4/29/2010 | +0.90 / +3.67% | 24.50 | 28.80 | 24.50 | 25.40 | 25.07 | 6.01 | 50,000 |   |  			
            | 4/28/2010 | -0.60 / -2.39% | 25.00 | 27.80 | 24.50 | 24.50 | 25.45 | 5.79 | 44,000 |   |  
            | 4/27/2010 | 0.00 / 0.00% | 25.30 | 28.10 | 25.10 | 25.10 | 25.90 | 5.93 | 40,700 |   |  			
            | 4/26/2010 | +0.40 / +1.62% | 25.30 | 28.20 | 25.10 | 25.10 | 25.16 | 5.93 | 15,400 |   |  
            | 4/22/2010 | -1.80 / -6.79% | 26.50 | 29.40 | 24.70 | 24.70 | 25.12 | 5.84 | 67,900 |   |  			
            | 4/21/2010 | +0.10 / +0.38% | 28.00 | 31.10 | 26.50 | 26.50 | 26.50 | 6.27 | 78,200 |   |  
            | 4/20/2010 | +1.70 / +6.88% | 26.40 | 29.30 | 26.40 | 26.40 | 27.13 | 6.24 | 73,700 |   |  			
            | 4/19/2010 | -8.60 / -25.83% | 24.70 | 27.40 | 24.70 | 24.70 | 24.70 | 5.84 | 300 |   |  
            | 4/16/2010 | -0.80 / -2.35% | 34.00 | 37.80 | 33.30 | 33.30 | 33.33 | 5.46 | 62,600 |   |  			
            | 4/15/2010 | +0.90 / +2.71% | 33.60 | 38.80 | 33.60 | 34.10 | 33.73 | 5.59 | 92,500 |   |  
            | 4/14/2010 | -0.10 / -0.30% | 34.00 | 39.00 | 33.20 | 33.20 | 33.53 | 5.45 | 42,100 |   |  			
            | 4/13/2010 | -2.60 / -7.24% | 36.10 | 40.10 | 33.30 | 33.30 | 33.63 | 5.46 | 82,200 |   |  
            | 4/12/2010 | +2.50 / +7.49% | 36.20 | 40.20 | 35.90 | 35.90 | 37.05 | 5.89 | 98,500 |   |  			
            | 4/9/2010 | -1.20 / -3.47% | 34.00 | 37.80 | 33.40 | 33.40 | 33.87 | 5.48 | 14,600 |   |  
            | 4/8/2010 | +1.80 / +5.49% | 33.00 | 38.60 | 33.00 | 34.60 | 34.37 | 5.68 | 119,900 |   |  |  |  
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