|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1996 
            |  
         
           6.50 
            |  
         
           4.625 
            |  
         
           -1.875 
            |  
         
           -28.85% 
            |  
      
|  
           1997 
            |  
         
           4.625 
            |  
         
           4.4375 
            |  
         
           -0.1875 
            |  
         
           -4.05% 
            |  
      
|  
           1998 
            |  
         
           4.4375 
            |  
         
           1.6875* 
            |  
         
           -2.75 
            |  
         
           -61.97% 
                
           |  
      
|  
           1999 
            |  
         
           3.375 
            |  
         
           5.90625 
                
           |  
         
           2.53125 
            |  
         
           75.00% 
            |  
      
|  
           2000 
            |  
         
           5.90625 
            |  
         
           13.625 
            |  
         
           7.71875 
            |  
         
           130.69% 
            |  
      
|  
           2001 
            |  
         
           13.625 
            |  
         
           26.34 
            |  
         
           12.715 
            |  
         
           93.32% 
            |  
      
|  
           2002 
            |  
         
           26.34 
            |  
         
           17.65 
            |  
         
           -8.69 
            |  
         
           -32.99% 
            |  
      
|  
           2003 
            |  
         
           17.65 
            |  
         
           28.66 
            |  
         
           11.01 
            |  
         
           62.38% 
                
           |  
      
|  
           2004 
            |  
         
           28.66 
            |  
         
           36.93 
            |  
         
           8.27 
            |  
         
           28.86% 
            |  
      
|  
           2005 
            |  
         
           36.93 
            |  
         
           35.46 
            |  
         
           -1.47 
            |  
         
           -3.98% 
            |  
      
|  
           2006 
            |  
         
           35.46 
            |  
         
           42.59 
            |  
         
           7.13 
            |  
         
           20.11% 
            |  
      
|  
           2007 
            |  
         
           42.59 
            |  
         
           41.93 
            |  
         
           -0.66 
            |  
         
           -1.55% 
            |  
      
|  
           2008 
            |  
         
           41.93 
            |  
         
           35.57 
            |  
         
           -6.36 
            |  
         
           -15.17% 
            |  
      
|  
           2009 
            |  
         
           35.57 
            |  
         
           36.87 
            |  
         
           1.30 
            |  
         
           3.65% 
            |  
      
|  
           2010 
            |  
         
           36.87 
            |  
         
           47.30 
            |  
         
           10.43 
            |  
         
           28.29% 
            |  
      
|  
           2011 
            |  
         
           47.30 
            |  
         
           30.83 
            |  
         
           -16.47 
            |  
         
           -34.82% 
                
           |  
      
|  
           2012 
            |  
         
           30.83 
            |  
         
           38.97 
            |  
         
           8.14 
            |  
         
           26.40% 
                
           |  
      
|  
           2013 
            |  
         
           38.97 
            |  
         
           47.71 
            |  
         
           8.74 
            |  
         
           22.43% 
                
           |  
      
|  
           2014 
            |  
         
           47.71 
            |  
         
           54.23 
            |  
         
           6.52 
            |  
         
           13.67% 
                
           |  
      
|  
           2015 
            |  
         
           54.23 
            |  
         
           84.96* 
            |  
         
           30.73 
            |  
         
           56.67% 
                
           |  
      
|  
           2016 
            |  
         
           67.78 
            |  
         
           85.79 
            |  
         
           18.01 
            |  
         
           26.57% 
                
           |  
      
|  
           2017 
            |  
         
           85.79 
            |  
         
           95.72* 
            |  
         
           9.93 
            |  
         
           11.57% 
                
           |  
      
|  
           2018 
            |  
         
           47.86 
            |  
         
           45.10 
            |  
         
           -2.76 
            |  
         
           -5.77% 
                
           |  
      
|  
           2019 
            |  
         
           45.10 
            |  
         
           58.28 
            |  
         
           13.18 
            |  
         
           29.22% 
                
           |  
      
|  
           2020 
            |  
         
           58.28 
            |  
         
           64.92 
            |  
         
           6.64 
            |  
         
           11.39% 
                
           |  
      
|  
           2021 
            |  
         
           64.92 
            |  
         
           66.99 
            |  
         
           2.07 
            |  
         
           3.19% 
                
           |  
      
|  
           2022 
            |  
         
           66.99 
            |  
         
           56.07 
            |  
         
           -10.92 
            |  
         
           -16.30% 
                
           |  
      
|  
           2023 
            |  
         
           56.07 
            |  
         
           43.55 
            |  
         
           -12.52 
            |  
         
           -22.33% 
                
           |  
      
|  
           2024 
            |  
         
           43.55 
            |  
         
           22.68 
            |  
         
           -20.87 
            |  
         
           -47.92% 
                
           |