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                    Closing price on 4/20/2012
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                    | Open | 18.00 |  
                    | High | 18.00 |  
                    | Low | 17.90 |  
                    | Volume | 40 |  
                    | Split-adjusted Price | 9.47 |  
                
             | 
 |  C21 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/20/2012 | -0.50 / -2.72% | 18.00 | 18.00 | 17.90 | 17.90 | 17.90 | 9.47 | 40 |   |  
            | 4/19/2012 | +0.10 / +0.55% | 19.20 | 19.20 | 18.40 | 18.40 | 18.40 | 9.73 | 70 |   |  			
            | 4/18/2012 | -0.20 / -1.08% | 18.50 | 18.50 | 18.00 | 18.30 | 18.30 | 9.68 | 3,410 |   |  
            | 4/17/2012 | -0.10 / -0.54% | 18.60 | 18.60 | 18.10 | 18.50 | 18.50 | 9.79 | 1,800 |   |  			
            | 4/16/2012 | -0.60 / -3.13% | 19.00 | 19.00 | 18.30 | 18.60 | 18.60 | 9.84 | 2,730 |   |  
            | 4/13/2012 | +0.80 / +4.35% | 19.20 | 19.20 | 19.20 | 19.20 | 19.20 | 10.16 | 10 |   |  			
            | 4/12/2012 | +0.40 / +2.22% | 18.50 | 18.50 | 17.70 | 18.40 | 18.40 | 9.73 | 6,210 |   |  
            | 4/11/2012 | -0.10 / -0.55% | 18.20 | 18.20 | 18.00 | 18.00 | 18.00 | 9.52 | 20 |   |  			
            | 4/10/2012 | +0.10 / +0.56% | 18.10 | 18.10 | 18.10 | 18.10 | 18.10 | 9.58 | 200 |   |  
            | 4/9/2012 | 0.00 / 0.00% | 18.00 | 18.00 | 18.00 | 18.00 | 18.00 | 9.52 | 2,950 |   |  			
            | 4/6/2012 | 0.00 / 0.00% | 18.00 | 18.00 | 18.00 | 18.00 | 18.00 | 9.52 | 400 |   |  
            | 4/5/2012 | 0.00 / 0.00% | 18.00 | 18.00 | 18.00 | 18.00 | 18.00 | 9.52 | 1,750 |   |  			
            | 4/4/2012 | 0.00 / 0.00% | 18.00 | 18.00 | 18.00 | 18.00 | 18.00 | 9.52 | 100 |   |  
            | 4/3/2012 | -0.10 / -0.55% | 18.10 | 18.10 | 18.00 | 18.00 | 18.00 | 9.52 | 1,180 |   |  			
            | 3/30/2012 | +0.10 / +0.56% | 18.00 | 18.10 | 17.90 | 18.10 | 18.10 | 9.58 | 520 |   |  
            | 3/29/2012 | -0.10 / -0.55% | 17.80 | 18.00 | 17.80 | 18.00 | 18.00 | 9.52 | 1,230 |   |  			
            | 3/28/2012 | 0.00 / 0.00% | 18.00 | 18.10 | 18.00 | 18.10 | 18.10 | 9.58 | 700 |   |  
            | 3/27/2012 | +0.10 / +0.56% | 18.20 | 18.60 | 18.00 | 18.10 | 18.10 | 9.58 | 7,680 |   |  			
            | 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 |   |  |