|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           2002 
            |  
         
           16.45 
            |  
         
           20.43 
            |  
         
           3.98 
            |  
         
           24.19% 
            |  
      
|  
           2003 
            |  
         
           20.43 
            |  
         
           23.30 
            |  
         
           2.87 
            |  
         
           14.05% 
            |  
      
|  
           2004 
            |  
         
           23.30 
            |  
         
           32.20 
            |  
         
           8.90 
            |  
         
           38.20% 
            |  
      
|  
           2005 
            |  
         
           32.20 
            |  
         
           42.92 
            |  
         
           10.72 
            |  
         
           33.29% 
            |  
      
|  
           2006 
            |  
         
           42.92 
            |  
         
           61.63 
            |  
         
           18.71 
            |  
         
           43.59% 
                
           |  
      
|  
           2007 
            |  
         
           61.63 
            |  
         
           113.40* 
            |  
         
           51.77 
            |  
         
           84.00% 
            |  
      
|  
           2008 
            |  
         
           56.70 
            |  
         
           23.83 
            |  
         
           -32.87 
            |  
         
           -57.97% 
            |  
      
|  
           2009 
            |  
         
           23.83 
            |  
         
           57.84 
            |  
         
           34.01 
            |  
         
           142.72% 
            |  
      
|  
           2010 
            |  
         
           57.84 
            |  
         
           88.91 
            |  
         
           31.07 
            |  
         
           53.72% 
            |  
      
|  
           2011 
            |  
         
           88.91 
            |  
         
           104.46* 
            |  
         
           15.55 
            |  
         
           17.49% 
            |  
      
|  
           2012 
            |  
         
           52.23 
            |  
         
           42.83 
            |  
         
           -9.40 
            |  
         
           -18.00% 
            |  
      
|  
           2013 
            |  
         
           42.83 
            |  
         
           52.21 
            |  
         
           9.38 
            |  
         
           21.90% 
            |  
      
|  
           2014 
            |  
         
           52.21 
            |  
         
           46.84 
            |  
         
           -5.37 
            |  
         
           -10.29% 
            |  
      
|  
           2015 
            |  
        
           46.84 
            |  
         
           29.01 
            |  
         
           -17.83 
            |  
         
           -38.07% 
            |  
      
|  
           2016 
            |  
         
           29.01 
            |  
         
           35.53 
            |  
         
           6.52 
            |  
         
           22.48% 
            |  
      
|  
           2017 
            |  
        
           35.53 
            |  
         
           31.31 
            |  
         
           -4.22 
            |  
         
           -11.88% 
            |  
      
|  
           2018 
            |  
        
           31.31 
            |  
         
           19.58 
            |  
         
           -11.73 
            |  
         
           -37.46% 
            |  
      
|  
           2019 
            |  
        
           19.58 
            |  
         
           21.44 
            |  
         
           1.86 
            |  
         
           9.50% 
            |  
      
|  
           2020 
            |  
        
           21.44 
            |  
         
           9.40 
            |  
         
           -12.04 
            |  
         
           -56.16% 
            |  
      
|  
           2021 
            |  
        
           9.40 
            |  
         
           8.728* 
            |  
         
           -0.672 
            |  
         
           -7.15% 
            |  
      
|  
           2022 
            |  
        
           5.92 
            |  
         
           12.19 
            |  
         
           6.27 
            |  
         
           105.91% 
            |  
      
|  
           2023 
            |  
        
           12.19 
            |  
         
           20.14 
            |  
         
           7.95 
            |  
         
           65.22% 
            |  
      
|  
           2024 
            |  
        
           20.14 
            |  
         
           28.94 
            |  
         
           8.80 
            |  
         
           43.69% 
            |