|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1996 
            |  
         
           26.50 
            |  
         
           31.25 
            |  
         
           4.75 
            |  
         
           17.92% 
            |  
      
|  
           1997 
            |  
         
           31.25 
            |  
         
           32.4375 
            |  
         
           1.1875 
            |  
         
           3.80% 
            |  
      
|  
           1998 
            |  
         
           32.4375 
            |  
         
           25.125 
            |  
         
           -7.3125 
            |  
         
           -22.54% 
            |  
      
|  
           1999 
            |  
         
           25.125 
            |  
         
           18.625 
            |  
         
           -6.50 
            |  
         
           -25.87% 
            |  
      
|  
           2000 
            |  
         
           18.625 
            |  
         
           19.875 
            |  
         
           1.25 
            |  
         
           6.71% 
            |  
      
|  
           2001 
            |  
         
           19.875 
            |  
         
           31.15 
            |  
         
           11.275 
            |  
         
           56.73% 
            |  
      
|  
           2002 
            |  
         
           31.15 
            |  
         
           28.36 
            |  
         
           -2.79 
            |  
         
           -8.96% 
            |  
      
|  
           2003 
            |  
         
           28.36 
            |  
         
           37.15 
            |  
         
           8.79 
            |  
         
           30.99% 
            |  
      
|  
           2004 
            |  
         
           37.15 
            |  
         
           42.14 
            |  
         
           4.99 
            |  
         
           13.43% 
            |  
      
|  
           2005 
            |  
         
           42.14 
            |  
         
           46.97 
            |  
         
           4.83 
            |  
         
           11.46% 
            |  
      
|  
           2006 
            |  
         
           46.97 
            |  
         
           57.28 
            |  
         
           10.31 
            |  
         
           21.95% 
            |  
      
|  
           2007 
            |  
         
           57.28 
            |  
         
           40.10 
            |  
         
           -17.18 
            |  
         
           -29.99% 
            |  
      
|  
           2008 
            |  
         
           40.10 
            |  
         
           36.00 
            |  
         
           -4.10 
            |  
         
           -10.22% 
            |  
      
|  
           2009 
            |  
         
           36.00 
            |  
         
           35.73 
            |  
         
           -0.27 
            |  
         
           -0.75% 
            |  
      
|  
           2010 
            |  
         
           35.73 
            |  
         
           36.81 
            |  
         
           1.08 
            |  
         
           3.02% 
            |  
      
|  
           2011 
            |  
         
           36.81 
            |  
         
           42.67 
            |  
         
           5.86 
            |  
         
           15.92% 
            |  
      
|  
           2012 
            |  
         
           42.67 
            |  
         
           62.10 
            |  
         
           19.43 
            |  
         
           45.54% 
            |  
      
|  
           2013 
            |  
         
           62.10 
            |  
         
           65.17 
            |  
         
           3.07 
            |  
         
           4.94% 
            |  
      
|  
           2014 
            |  
         
           65.17 
            |  
         
           87.22 
            |  
         
           22.05 
            |  
         
           33.83% 
            |  
      
|  
           2015 
            |  
        
           87.22 
            |  
         
           107.31 
            |  
         
           20.09 
            |  
         
           23.03% 
            |  
      
|  
           2016 
            |  
        
           107.31 
            |  
         
           85.26 
            |  
         
           -22.05 
            |  
         
           -20.55% 
            |  
      
|  
           2017 
            |  
        
           85.26 
            |  
         
           89.07 
            |  
         
           3.81 
            |  
         
           4.47% 
            |  
      
|  
           2018 
            |  
        
           89.07 
            |  
         
           92.99 
            |  
         
           3.92 
            |  
         
           4.40% 
            |  
      
|  
           2019 
            |  
        
           92.99 
            |  
         
           108.28 
            |  
         
           15.29 
            |  
         
           16.44% 
            |  
      
|  
           2020 
            |  
        
           108.28 
            |  
         
           119.39 
            |  
         
           11.11 
            |  
         
           10.26% 
            |  
      
|  
           2021 
            |  
        
           119.39 
            |  
         
           229.77* 
            |  
         
           110.38 
            |  
         
           92.45% 
            |  
      
|  
           2022 
            |  
        
           153.18 
            |  
         
           98.50 
            |  
         
           -54.68 
            |  
         
           -35.70% 
            |  
      
|  
           2023 
            |  
        
           98.50 
            |  
         
           143.49535* 
            |  
         
           44.99535 
            |  
         
           45.68% 
            |