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                    Closing price on 5/7/2012
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        |           
                
                    | Open | 42.50 |  
                    | High | 42.80 |  
                    | Low | 42.50 |  
                    | Volume | 16,620 |  
                    | Split-adjusted Price | 16.97 |  
                
             | 
 |  CTD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/7/2012 | +0.70 / +1.67% | 42.50 | 42.80 | 42.50 | 42.50 | 42.50 | 16.97 | 16,620 |   |  
            | 5/4/2012 | +1.40 / +3.47% | 40.00 | 41.80 | 40.00 | 41.80 | 41.80 | 16.69 | 46,850 |   |  			
            | 5/3/2012 | +0.40 / +1.00% | 40.00 | 40.70 | 39.00 | 40.40 | 40.40 | 16.13 | 11,800 |   |  
            | 5/2/2012 | +0.80 / +2.04% | 39.90 | 40.80 | 39.00 | 40.00 | 40.00 | 15.97 | 21,240 |   |  			
            | 4/27/2012 | -0.10 / -0.25% | 39.40 | 39.50 | 39.20 | 39.20 | 39.20 | 15.65 | 20,600 |   |  
            | 4/26/2012 | +1.80 / +4.80% | 38.00 | 39.30 | 38.00 | 39.30 | 39.30 | 15.69 | 69,640 |   |  			
            | 4/25/2012 | -0.50 / -1.32% | 37.50 | 38.00 | 37.50 | 37.50 | 37.50 | 14.97 | 15,530 |   |  
            | 4/24/2012 | +0.50 / +1.33% | 37.90 | 38.00 | 36.30 | 38.00 | 38.00 | 15.17 | 6,170 |   |  			
            | 4/23/2012 | -0.80 / -2.09% | 38.00 | 38.30 | 37.50 | 37.50 | 37.50 | 14.97 | 7,090 |   |  
            | 4/20/2012 | 0.00 / 0.00% | 38.00 | 38.30 | 38.00 | 38.30 | 38.30 | 15.29 | 3,620 |   |  			
            | 4/19/2012 | -1.70 / -4.25% | 36.50 | 38.50 | 36.50 | 38.30 | 38.30 | 15.29 | 12,410 |   |  
            | 4/18/2012 | -2.00 / -4.76% | 42.00 | 42.00 | 39.90 | 40.00 | 40.00 | 15.17 | 3,900 |   |  			
            | 4/17/2012 | 0.00 / 0.00% | 42.00 | 43.00 | 40.00 | 42.00 | 42.00 | 15.93 | 116,340 |   |  
            | 4/16/2012 | 0.00 / 0.00% | 42.00 | 42.00 | 41.50 | 42.00 | 42.00 | 15.93 | 258,150 |   |  			
            | 4/13/2012 | +1.80 / +4.48% | 40.20 | 42.00 | 40.20 | 42.00 | 42.00 | 15.93 | 21,530 |   |  
            | 4/12/2012 | +1.60 / +4.15% | 39.70 | 40.50 | 38.60 | 40.20 | 40.20 | 15.25 | 72,930 |   |  			
            | 4/11/2012 | +0.40 / +1.05% | 39.70 | 39.70 | 38.60 | 38.60 | 38.60 | 14.64 | 7,570 |   |  
            | 4/10/2012 | -0.30 / -0.78% | 38.00 | 38.50 | 38.00 | 38.20 | 38.20 | 14.49 | 312,180 |   |  			
            | 4/9/2012 | +0.90 / +2.39% | 38.40 | 38.50 | 37.70 | 38.50 | 38.50 | 14.60 | 21,220 |   |  
            | 4/6/2012 | -0.30 / -0.79% | 39.00 | 39.00 | 37.60 | 37.60 | 37.60 | 14.26 | 14,310 |   |  			
            | 4/5/2012 | +0.40 / +1.07% | 37.60 | 37.90 | 37.60 | 37.90 | 37.90 | 14.37 | 11,000 |   |  
            | 4/4/2012 | -0.40 / -1.06% | 37.60 | 37.60 | 37.50 | 37.50 | 37.50 | 14.22 | 3,840 |   |  			
            | 4/3/2012 | +0.10 / +0.26% | 37.80 | 38.00 | 37.70 | 37.90 | 37.90 | 14.37 | 11,910 |   |  
            | 3/30/2012 | +0.20 / +0.53% | 37.60 | 38.00 | 37.50 | 37.80 | 37.80 | 14.34 | 29,450 |   |  			
            | 3/29/2012 | +0.10 / +0.27% | 37.50 | 38.50 | 37.50 | 37.60 | 37.60 | 14.26 | 19,470 |   |  
            | 3/28/2012 | -1.00 / -2.60% | 38.40 | 39.30 | 37.50 | 37.50 | 37.50 | 14.22 | 572,890 |   |  			
            | 3/27/2012 | +0.10 / +0.26% | 38.50 | 38.50 | 38.00 | 38.50 | 38.50 | 14.60 | 22,750 |   |  
            | 3/26/2012 | +0.40 / +1.05% | 37.50 | 38.50 | 37.50 | 38.40 | 38.40 | 14.56 | 73,990 |   |  			
            | 3/23/2012 | +0.60 / +1.60% | 38.50 | 38.50 | 36.90 | 38.00 | 38.00 | 14.41 | 21,290 |   |  
            | 3/22/2012 | +0.80 / +2.19% | 35.00 | 37.40 | 35.00 | 37.40 | 37.40 | 14.19 | 40,710 |   |  |