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                    Closing price on 6/19/2012
                 |  |  
    
        |           
                
                    | Open | 16.20 |  
                    | High | 16.80 |  
                    | Low | 16.10 |  
                    | Volume | 610 |  
                    | Split-adjusted Price | 9.36 |  
                
             | 
 |  C21 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/19/2012 | -0.10 / -0.59% | 16.20 | 16.80 | 16.10 | 16.80 | 16.80 | 9.36 | 610 |   |  
            | 6/18/2012 | -0.10 / -0.59% | 17.00 | 17.00 | 16.90 | 16.90 | 16.90 | 9.41 | 160 |   |  			
            | 6/15/2012 | -0.20 / -1.16% | 17.00 | 17.00 | 17.00 | 17.00 | 17.00 | 9.47 | 100 |   |  
            | 6/14/2012 | +0.30 / +1.78% | 16.80 | 17.50 | 16.80 | 17.20 | 17.20 | 9.58 | 640 |   |  			
            | 6/13/2012 | +0.20 / +1.20% | 16.50 | 16.90 | 16.30 | 16.90 | 16.90 | 9.41 | 730 |   |  
            | 6/12/2012 | -0.40 / -2.34% | 17.00 | 17.00 | 16.50 | 16.70 | 16.70 | 9.30 | 700 |   |  			
            | 6/11/2012 | 0.00 / 0.00% | 17.00 | 17.10 | 16.80 | 17.10 | 17.10 | 9.52 | 1,660 |   |  
            | 6/8/2012 | +0.10 / +0.59% | 17.60 | 17.60 | 17.10 | 17.10 | 17.10 | 9.52 | 1,120 |   |  			
            | 6/7/2012 | +0.70 / +4.29% | 17.00 | 17.00 | 17.00 | 17.00 | 17.00 | 9.47 | 60 |   |  
            | 6/6/2012 | -0.40 / -2.40% | 16.60 | 17.00 | 16.30 | 16.30 | 16.30 | 9.08 | 1,200 |   |  			
            | 6/5/2012 | +0.10 / +0.60% | 16.70 | 16.70 | 16.70 | 16.70 | 16.70 | 9.30 | 70 |   |  
            | 6/4/2012 | -0.20 / -1.19% | 16.00 | 16.70 | 16.00 | 16.60 | 16.60 | 9.24 | 5,710 |   |  			
            | 6/1/2012 | +0.50 / +3.07% | 16.80 | 16.80 | 16.80 | 16.80 | 16.80 | 9.36 | 70 |   |  
            | 5/31/2012 | -0.50 / -2.98% | 16.80 | 16.80 | 16.10 | 16.30 | 16.30 | 9.08 | 630 |   |  			
            | 5/30/2012 | -0.10 / -0.59% | 16.80 | 16.80 | 16.70 | 16.80 | 16.80 | 9.36 | 210 |   |  
            | 5/29/2012 | +0.20 / +1.20% | 16.90 | 17.00 | 16.30 | 16.90 | 16.90 | 9.41 | 2,130 |   |  			
            | 5/28/2012 | 0.00 / 0.00% | 16.90 | 16.90 | 16.70 | 16.70 | 16.70 | 9.30 | 510 |   |  
            | 5/25/2012 | 0.00 / 0.00% | 16.70 | 16.80 | 15.90 | 16.70 | 16.70 | 9.30 | 3,420 |   |  			
            | 5/24/2012 | -0.10 / -0.60% | 16.70 | 16.70 | 16.00 | 16.70 | 16.70 | 9.30 | 7,330 |   |  
            | 5/23/2012 | -0.20 / -1.18% | 16.80 | 16.80 | 16.80 | 16.80 | 16.80 | 9.36 | 20 |   |  			
            | 5/22/2012 | 0.00 / 0.00% | 17.00 | 17.00 | 16.90 | 17.00 | 17.00 | 9.47 | 1,120 |   |  
            | 5/21/2012 | +0.10 / +0.59% | 16.90 | 17.00 | 16.90 | 17.00 | 17.00 | 9.47 | 570 |   |  			
            | 5/18/2012 | 0.00 / 0.00% | 16.50 | 16.90 | 16.10 | 16.90 | 16.90 | 9.41 | 6,950 |   |  
            | 5/17/2012 | 0.00 / 0.00% | 16.90 | 16.90 | 16.90 | 16.90 | 16.90 | 9.41 | 10 |   |  			
            | 5/16/2012 | +0.10 / +0.60% | 17.00 | 17.00 | 16.50 | 16.90 | 16.90 | 9.41 | 3,410 |   |  
            | 5/15/2012 | -0.20 / -1.18% | 16.40 | 16.80 | 16.40 | 16.80 | 16.80 | 9.36 | 1,160 |   |  			
            | 5/14/2012 | 0.00 / 0.00% | 17.10 | 17.10 | 16.80 | 17.00 | 17.00 | 9.47 | 1,260 |   |  
            | 5/11/2012 | -0.20 / -1.16% | 17.20 | 17.30 | 17.00 | 17.00 | 17.00 | 9.47 | 8,850 |   |  			
            | 5/10/2012 | +0.10 / +0.58% | 17.10 | 17.40 | 17.00 | 17.20 | 17.20 | 9.58 | 5,840 |   |  
            | 5/9/2012 | -0.40 / -2.29% | 17.50 | 17.50 | 17.10 | 17.10 | 17.10 | 9.52 | 4,060 |   |  |