| 
    
        
            | 
                    Closing price on 3/26/2012
                 |  |  
    
        |           
                
                    | Open | 18.20 |  
                    | High | 18.20 |  
                    | Low | 17.90 |  
                    | Volume | 7,070 |  
                    | Split-adjusted Price | 9.52 |  
                
             | 
 |  C21 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/26/2012 | 0.00 / 0.00% | 18.20 | 18.20 | 17.90 | 18.00 | 18.00 | 9.52 | 7,070 |   |  
            | 3/23/2012 | +0.10 / +0.56% | 18.00 | 18.60 | 17.90 | 18.00 | 18.00 | 9.52 | 2,460 |   |  			
            | 3/22/2012 | -0.20 / -1.10% | 17.20 | 17.90 | 17.20 | 17.90 | 17.90 | 9.47 | 890 |   |  
            | 3/21/2012 | +0.10 / +0.56% | 18.00 | 18.10 | 17.80 | 18.10 | 18.10 | 9.58 | 2,860 |   |  			
            | 3/20/2012 | +0.10 / +0.56% | 17.80 | 18.00 | 17.70 | 18.00 | 18.00 | 9.52 | 3,400 |   |  
            | 3/19/2012 | -0.10 / -0.56% | 18.00 | 18.00 | 17.70 | 17.90 | 17.90 | 9.47 | 430 |   |  			
            | 3/16/2012 | 0.00 / 0.00% | 18.00 | 18.30 | 17.60 | 18.00 | 18.00 | 9.52 | 1,570 |   |  
            | 3/15/2012 | +0.50 / +2.86% | 18.00 | 18.00 | 17.00 | 18.00 | 18.00 | 9.52 | 2,070 |   |  			
            | 3/14/2012 | -0.10 / -0.57% | 17.10 | 18.00 | 17.10 | 17.50 | 17.50 | 9.26 | 27,350 |   |  
            | 3/13/2012 | -0.40 / -2.22% | 17.30 | 17.90 | 17.20 | 17.60 | 17.60 | 9.31 | 7,190 |   |  			
            | 3/12/2012 | -0.40 / -2.17% | 17.70 | 18.30 | 17.50 | 18.00 | 18.00 | 9.52 | 3,360 |   |  
            | 3/9/2012 | 0.00 / 0.00% | 18.40 | 18.40 | 18.40 | 18.40 | 18.40 | 9.73 | 10 |   |  			
            | 3/8/2012 | 0.00 / 0.00% | 17.90 | 18.40 | 17.90 | 18.40 | 18.40 | 9.73 | 10,020 |   |  
            | 3/7/2012 | 0.00 / 0.00% | 18.00 | 18.40 | 17.50 | 18.40 | 18.40 | 9.73 | 520 |   |  			
            | 3/6/2012 | +0.10 / +0.55% | 18.50 | 18.60 | 17.50 | 18.40 | 18.40 | 9.73 | 19,950 |   |  
            | 3/5/2012 | +0.60 / +3.39% | 17.60 | 18.50 | 17.60 | 18.30 | 18.30 | 9.68 | 34,200 |   |  			
            | 3/2/2012 | -0.10 / -0.56% | 17.80 | 17.80 | 17.60 | 17.70 | 17.70 | 9.36 | 12,240 |   |  
            | 3/1/2012 | 0.00 / 0.00% | 17.80 | 17.80 | 17.80 | 17.80 | 17.80 | 9.42 | 560 |   |  			
            | 2/29/2012 | +0.30 / +1.71% | 17.70 | 17.80 | 17.70 | 17.80 | 17.80 | 9.42 | 150 |   |  
            | 2/28/2012 | -0.30 / -1.69% | 17.90 | 17.90 | 17.50 | 17.50 | 17.50 | 9.26 | 14,910 |   |  			
            | 2/27/2012 | -0.10 / -0.56% | 17.90 | 17.90 | 17.50 | 17.80 | 17.80 | 9.42 | 1,740 |   |  
            | 2/24/2012 | +0.10 / +0.56% | 17.80 | 17.90 | 17.50 | 17.90 | 17.90 | 9.47 | 11,490 |   |  			
            | 2/23/2012 | -0.10 / -0.56% | 18.10 | 18.10 | 17.30 | 17.80 | 17.80 | 9.42 | 5,260 |   |  
            | 2/22/2012 | -0.40 / -2.19% | 18.10 | 18.10 | 17.80 | 17.90 | 17.90 | 9.47 | 10,160 |   |  			
            | 2/21/2012 | +0.50 / +2.81% | 18.30 | 18.30 | 18.30 | 18.30 | 18.30 | 9.68 | 10 |   |  
            | 2/20/2012 | +0.80 / +4.71% | 17.20 | 17.80 | 16.80 | 17.80 | 17.80 | 9.42 | 9,920 |   |  			
            | 2/17/2012 | 0.00 / 0.00% | 17.00 | 17.00 | 17.00 | 17.00 | 17.00 | 8.99 | 10 |   |  
            | 2/16/2012 | 0.00 / 0.00% | 17.00 | 17.00 | 17.00 | 17.00 | 17.00 | 8.99 | 15,520 |   |  			
            | 2/15/2012 | 0.00 / 0.00% | 17.00 | 17.00 | 16.50 | 17.00 | 17.00 | 8.99 | 1,270 |   |  
            | 2/14/2012 | -0.10 / -0.58% | 17.10 | 17.10 | 16.70 | 17.00 | 17.00 | 8.99 | 120 |   |  |