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                    Closing price on 3/4/2011
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                    | Open | 23.90 |  
                    | High | 23.90 |  
                    | Low | 23.90 |  
                    | Volume | 0 |  
                    | Split-adjusted Price | 18.47 |  
                
             | 
 |  V21 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/4/2011 | 0.00 / 0.00% | 23.90 | 23.90 | 23.90 | 23.90 | 23.90 | 18.47 | 0 |   |  
            | 3/3/2011 | 0.00 / 0.00% | 23.90 | 23.90 | 23.90 | 23.90 | 23.90 | 18.47 | 0 |   |  			
            | 3/2/2011 | +0.90 / +3.91% | 23.90 | 23.90 | 23.90 | 23.90 | 23.90 | 18.47 | 200 |   |  
            | 3/1/2011 | 0.00 / 0.00% | 23.00 | 23.00 | 23.00 | 23.00 | 23.00 | 17.77 | 0 |   |  			
            | 2/28/2011 | -0.60 / -2.54% | 23.00 | 23.00 | 23.00 | 23.00 | 23.00 | 17.77 | 1,600 |   |  
            | 2/25/2011 | -0.40 / -1.67% | 23.20 | 23.60 | 23.00 | 23.60 | 23.60 | 18.24 | 10,800 |   |  			
            | 2/24/2011 | +0.50 / +2.13% | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 18.55 | 100 |   |  
            | 2/23/2011 | -1.20 / -4.86% | 24.40 | 24.40 | 23.00 | 23.50 | 23.50 | 18.16 | 3,300 |   |  			
            | 2/22/2011 | +1.20 / +5.11% | 24.70 | 24.70 | 24.70 | 24.70 | 24.70 | 19.09 | 100 |   |  
            | 2/21/2011 | -0.40 / -1.67% | 23.50 | 23.50 | 23.50 | 23.50 | 23.50 | 18.16 | 1,400 |   |  			
            | 2/18/2011 | -0.60 / -2.45% | 23.90 | 23.90 | 23.90 | 23.90 | 23.90 | 18.47 | 0 |   |  
            | 2/17/2011 | -0.80 / -3.16% | 24.00 | 24.50 | 23.60 | 24.50 | 24.50 | 18.93 | 3,100 |   |  			
            | 2/16/2011 | +0.10 / +0.40% | 25.30 | 25.30 | 25.30 | 25.30 | 25.30 | 19.55 | 100 |   |  
            | 2/15/2011 | -0.10 / -0.40% | 25.20 | 25.20 | 25.20 | 25.20 | 25.20 | 19.47 | 500 |   |  			
            | 2/14/2011 | +0.10 / +0.40% | 25.30 | 25.30 | 25.30 | 25.30 | 25.30 | 19.55 | 0 |   |  
            | 2/11/2011 | 0.00 / 0.00% | 25.30 | 25.30 | 25.20 | 25.20 | 25.20 | 19.47 | 900 |   |  			
            | 2/10/2011 | +1.20 / +5.00% | 25.30 | 25.30 | 24.20 | 25.20 | 25.20 | 19.47 | 6,800 |   |  
            | 2/9/2011 | +1.90 / +8.60% | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 18.55 | 400 |   |  			
            | 2/8/2011 | -1.00 / -4.33% | 23.10 | 23.10 | 22.10 | 22.10 | 22.10 | 17.08 | 1,700 |   |  
            | 1/28/2011 | -0.50 / -2.12% | 23.10 | 23.10 | 23.10 | 23.10 | 23.10 | 17.85 | 1,900 |   |  			
            | 1/27/2011 | -1.40 / -5.60% | 24.00 | 25.30 | 23.60 | 23.60 | 23.60 | 18.24 | 1,600 |   |  
            | 1/26/2011 | +1.50 / +6.38% | 25.10 | 25.10 | 25.00 | 25.00 | 25.00 | 19.32 | 400 |   |  			
            | 1/25/2011 | -1.50 / -6.00% | 23.50 | 23.50 | 23.40 | 23.50 | 23.50 | 18.16 | 2,600 |   |  
            | 1/24/2011 | -1.70 / -6.37% | 25.00 | 25.20 | 25.00 | 25.00 | 25.00 | 19.32 | 2,400 |   |  			
            | 1/21/2011 | +0.10 / +0.38% | 26.70 | 26.70 | 26.70 | 26.70 | 26.70 | 20.63 | 100 |   |  
            | 1/20/2011 | +0.60 / +2.31% | 26.70 | 26.70 | 26.60 | 26.60 | 26.60 | 20.55 | 200 |   |  			
            | 1/19/2011 | -0.70 / -2.62% | 27.10 | 27.10 | 26.00 | 26.00 | 26.00 | 20.09 | 7,500 |   |  
            | 1/18/2011 | -2.00 / -6.97% | 28.00 | 28.00 | 26.70 | 26.70 | 26.70 | 20.63 | 15,500 |   |  			
            | 1/17/2011 | +1.30 / +4.74% | 28.70 | 28.70 | 28.70 | 28.70 | 28.70 | 22.18 | 5,000 |   |  
            | 1/14/2011 | +0.20 / +0.74% | 27.80 | 27.80 | 27.40 | 27.40 | 27.40 | 21.17 | 1,400 |   |  |