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            | 
                    Closing price on 9/22/2014
                 |  |  
    
        |           
                
                    | Open | 4.70 |  
                    | High | 4.70 |  
                    | Low | 4.60 |  
                    | Volume | 280,890 |  
                    | Split-adjusted Price | 4.37 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/22/2014 | 0.00 / 0.00% | 4.70 | 4.70 | 4.60 | 4.70 | 4.70 | 4.37 | 280,890 |   |  
            | 9/19/2014 | 0.00 / 0.00% | 4.70 | 4.70 | 4.60 | 4.70 | 4.70 | 4.37 | 240,340 |   |  			
            | 9/18/2014 | 0.00 / 0.00% | 4.60 | 4.80 | 4.40 | 4.70 | 4.70 | 4.37 | 495,420 |   |  
            | 9/17/2014 | 0.00 / 0.00% | 4.70 | 4.90 | 4.70 | 4.70 | 4.70 | 4.37 | 927,880 |   |  			
            | 9/16/2014 | 0.00 / 0.00% | 4.70 | 4.70 | 4.50 | 4.70 | 4.70 | 4.37 | 306,600 |   |  
            | 9/15/2014 | -0.10 / -2.08% | 4.80 | 4.80 | 4.60 | 4.70 | 4.70 | 4.37 | 266,450 |   |  			
            | 9/12/2014 | +0.30 / +6.67% | 4.40 | 4.80 | 4.40 | 4.80 | 4.80 | 4.47 | 1,277,820 |   |  
            | 9/11/2014 | -0.10 / -2.17% | 4.70 | 4.70 | 4.50 | 4.50 | 4.50 | 4.19 | 169,430 |   |  			
            | 9/10/2014 | 0.00 / 0.00% | 4.50 | 4.70 | 4.30 | 4.60 | 4.60 | 4.28 | 577,720 |   |  
            | 9/9/2014 | 0.00 / 0.00% | 4.90 | 4.90 | 4.50 | 4.60 | 4.60 | 4.28 | 1,844,550 |   |  			
            | 9/8/2014 | +0.30 / +6.98% | 4.60 | 4.60 | 4.60 | 4.60 | 4.60 | 4.28 | 281,000 |   |  
            | 9/5/2014 | +0.20 / +4.88% | 4.20 | 4.30 | 4.20 | 4.30 | 4.30 | 4.00 | 897,620 |   |  			
            | 9/4/2014 | -0.10 / -2.38% | 4.10 | 4.20 | 4.10 | 4.10 | 4.10 | 3.82 | 293,280 |   |  
            | 9/3/2014 | +0.10 / +2.44% | 4.20 | 4.20 | 4.10 | 4.20 | 4.20 | 3.91 | 250,090 |   |  			
            | 8/29/2014 | -0.10 / -2.38% | 4.20 | 4.20 | 4.10 | 4.10 | 4.10 | 3.82 | 100,740 |   |  
            | 8/28/2014 | +0.10 / +2.44% | 4.00 | 4.20 | 4.00 | 4.20 | 4.20 | 3.91 | 68,830 |   |  			
            | 8/27/2014 | +0.10 / +2.50% | 4.00 | 4.20 | 4.00 | 4.10 | 4.10 | 3.82 | 49,390 |   |  
            | 8/26/2014 | -0.10 / -2.44% | 4.10 | 4.20 | 4.00 | 4.00 | 4.00 | 3.72 | 147,790 |   |  			
            | 8/25/2014 | 0.00 / 0.00% | 4.10 | 4.20 | 4.00 | 4.10 | 4.10 | 3.82 | 158,790 |   |  
            | 8/22/2014 | -0.10 / -2.38% | 4.10 | 4.20 | 4.10 | 4.10 | 4.10 | 3.82 | 157,750 |   |  			
            | 8/21/2014 | 0.00 / 0.00% | 4.10 | 4.20 | 4.10 | 4.20 | 4.20 | 3.91 | 167,830 |   |  
            | 8/20/2014 | 0.00 / 0.00% | 4.10 | 4.20 | 4.10 | 4.20 | 4.20 | 3.91 | 108,490 |   |  			
            | 8/19/2014 | +0.10 / +2.44% | 4.10 | 4.20 | 4.10 | 4.20 | 4.20 | 3.91 | 261,380 |   |  
            | 8/18/2014 | +0.10 / +2.50% | 4.00 | 4.20 | 4.00 | 4.10 | 4.10 | 3.82 | 198,770 |   |  			
            | 8/15/2014 | -0.10 / -2.44% | 4.20 | 4.20 | 4.00 | 4.00 | 4.00 | 3.72 | 243,480 |   |  
            | 8/14/2014 | -0.10 / -2.38% | 4.20 | 4.20 | 4.10 | 4.10 | 4.10 | 3.82 | 243,450 |   |  			
            | 8/13/2014 | 0.00 / 0.00% | 4.20 | 4.20 | 4.10 | 4.20 | 4.20 | 3.91 | 109,070 |   |  
            | 8/12/2014 | -0.10 / -2.33% | 4.20 | 4.20 | 4.10 | 4.20 | 4.20 | 3.91 | 152,000 |   |  			
            | 8/11/2014 | -0.10 / -2.27% | 4.40 | 4.40 | 4.20 | 4.30 | 4.30 | 4.00 | 35,460 |   |  
            | 8/8/2014 | +0.20 / +4.76% | 4.30 | 4.40 | 4.30 | 4.40 | 4.40 | 4.10 | 381,340 |   |  |