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            | 
                    Closing price on 3/6/2015
                 |  |  
    
        |           
                
                    | Open | 16.20 |  
                    | High | 16.30 |  
                    | Low | 16.00 |  
                    | Volume | 285,600 |  
                    | Split-adjusted Price | 13.91 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/6/2015 | 0.00 / 0.00% | 16.20 | 16.30 | 16.00 | 16.20 | 16.10 | 13.91 | 285,600 |   |  
            | 3/5/2015 | 0.00 / 0.00% | 16.20 | 16.30 | 16.10 | 16.20 | 16.20 | 13.91 | 302,000 |   |  			
            | 3/4/2015 | +0.50 / +3.18% | 15.70 | 16.20 | 15.70 | 16.20 | 15.93 | 13.91 | 415,300 |   |  
            | 3/3/2015 | +0.10 / +0.64% | 15.60 | 15.70 | 15.50 | 15.70 | 15.58 | 13.48 | 351,800 |   |  			
            | 3/2/2015 | 0.00 / 0.00% | 15.60 | 15.70 | 15.50 | 15.60 | 15.59 | 13.40 | 319,200 |   |  
            | 2/27/2015 | +0.10 / +0.65% | 15.50 | 15.70 | 15.50 | 15.60 | 15.59 | 13.40 | 253,700 |   |  			
            | 2/26/2015 | +0.10 / +0.65% | 15.30 | 15.60 | 15.20 | 15.50 | 15.32 | 13.31 | 480,100 |   |  
            | 2/25/2015 | -0.20 / -1.28% | 15.60 | 15.70 | 15.10 | 15.40 | 15.44 | 13.22 | 801,600 |   |  			
            | 2/24/2015 | +0.50 / +3.31% | 15.10 | 15.60 | 15.10 | 15.60 | 15.23 | 13.40 | 417,400 |   |  
            | 2/13/2015 | +0.30 / +2.03% | 14.80 | 15.10 | 14.80 | 15.10 | 14.92 | 12.97 | 548,800 |   |  			
            | 2/12/2015 | +0.40 / +2.78% | 14.40 | 14.80 | 14.40 | 14.80 | 14.59 | 12.71 | 630,600 |   |  
            | 2/11/2015 | +1.10 / +8.27% | 13.20 | 14.50 | 13.20 | 14.40 | 13.55 | 12.37 | 869,800 |   |  			
            | 2/10/2015 | -0.20 / -1.48% | 13.40 | 13.50 | 13.10 | 13.30 | 13.36 | 11.42 | 251,500 |   |  
            | 2/9/2015 | -0.60 / -4.26% | 14.10 | 14.10 | 13.50 | 13.50 | 13.78 | 11.59 | 422,000 |   |  			
            | 2/6/2015 | -0.10 / -0.70% | 14.10 | 14.30 | 14.00 | 14.10 | 14.15 | 12.11 | 918,400 |   |  
            | 2/5/2015 | +0.10 / +0.71% | 12.70 | 14.20 | 12.70 | 14.20 | 13.90 | 12.19 | 509,800 |   |  			
            | 2/4/2015 | 0.00 / 0.00% | 14.10 | 14.30 | 13.90 | 14.10 | 14.11 | 12.11 | 886,800 |   |  
            | 2/3/2015 | +1.20 / +9.30% | 12.90 | 14.10 | 12.80 | 14.10 | 13.77 | 12.11 | 996,000 |   |  			
            | 2/2/2015 | 0.00 / 0.00% | 12.90 | 13.10 | 12.70 | 12.90 | 12.91 | 11.08 | 238,400 |   |  
            | 1/30/2015 | 0.00 / 0.00% | 12.90 | 12.90 | 12.50 | 12.90 | 12.77 | 11.08 | 243,700 |   |  			
            | 1/29/2015 | 0.00 / 0.00% | 12.90 | 12.90 | 12.80 | 12.90 | 12.86 | 11.08 | 219,000 |   |  
            | 1/28/2015 | 0.00 / 0.00% | 12.90 | 13.00 | 12.80 | 12.90 | 12.85 | 11.08 | 215,200 |   |  			
            | 1/27/2015 | -0.30 / -2.27% | 13.20 | 13.30 | 12.90 | 12.90 | 13.10 | 11.08 | 208,500 |   |  
            | 1/26/2015 | +0.20 / +1.54% | 13.50 | 13.50 | 13.00 | 13.20 | 13.08 | 11.33 | 252,800 |   |  			
            | 1/23/2015 | +0.20 / +1.56% | 12.80 | 13.00 | 12.80 | 13.00 | 12.90 | 11.16 | 358,100 |   |  
            | 1/22/2015 | +0.20 / +1.59% | 12.60 | 12.80 | 12.60 | 12.80 | 12.64 | 10.99 | 562,700 |   |  			
            | 1/21/2015 | +0.10 / +0.80% | 12.50 | 12.70 | 12.40 | 12.60 | 12.54 | 10.82 | 263,100 |   |  
            | 1/20/2015 | 0.00 / 0.00% | 12.50 | 12.60 | 12.50 | 12.50 | 12.50 | 10.73 | 150,600 |   |  			
            | 1/19/2015 | -0.20 / -1.57% | 12.70 | 12.80 | 12.50 | 12.50 | 12.65 | 10.73 | 174,800 |   |  
            | 1/16/2015 | 0.00 / 0.00% | 12.70 | 12.90 | 12.60 | 12.70 | 12.74 | 10.91 | 337,300 |   |  |