|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1998 
            |  
         
           25.50 
            |  
         
           22.875 
                
           |  
         
           -2.625 
            |  
         
           -10.29% 
            |  
      
|  
           1999 
            |  
         
           22.875 
            |  
         
           19.50 
                
           |  
         
           -3.375 
            |  
         
           -14.75% 
            |  
      
|  
           2000 
            |  
         
           19.50 
            |  
         
           13.0625 
                
           |  
         
           -6.4375 
            |  
         
           -33.01% 
            |  
      
|  
           2001 
            |  
         
           13.0625 
            |  
         
           25.40 
            |  
         
           12.3375 
            |  
         
           94.45% 
            |  
      
|  
           2002 
            |  
         
           25.40 
            |  
         
           46.88* 
            |  
         
           21.48 
            |  
         
           84.57% 
            |  
      
|  
           2003 
            |  
         
           23.44 
            |  
         
           45.06* 
            |  
         
           21.62 
            |  
         
           92.24% 
            |  
      
|  
           2004 
            |  
         
           22.53 
            |  
         
           34.03 
            |  
         
           11.50 
            |  
         
           51.04% 
            |  
      
|  
           2005 
            |  
         
           34.03 
            |  
         
           36.90 
            |  
         
           2.87 
            |  
         
           8.43% 
            |  
      
|  
           2006 
            |  
         
           36.90 
            |  
         
           33.06 
            |  
         
           -3.84 
            |  
         
           -10.41% 
            |  
      
|  
           2007 
            |  
         
           33.06 
            |  
         
           26.20 
            |  
         
           -6.86
            |  
         
           -20.75% 
            |  
      
|  
           2008 
            |  
         
           26.20 
            |  
         
           29.64 
            |  
         
           3.44 
            |  
         
           13.13%
            |  
      
|  
           2009 
            |  
         
           29.64 
            |  
         
           29.27 
            |  
         
           -0.37
            |  
         
           -1.25% 
            |  
      
|  
           2010 
            |  
         
           29.27 
            |  
         
           43.35 
            |  
         
           14.08
            |  
         
           48.10% 
            |  
      
|  
           2011 
            |  
         
           43.35 
            |  
         
           59.26* 
            |  
         
           15.91
            |  
         
           36.70% 
            |  
      
|  
           2012 
            |  
         
           29.63 
            |  
         
           33.47 
            |  
         
           3.84
            |  
         
           12.96%
            |  
      
|  
           2013 
            |  
         
           33.47 
            |  
         
           56.59 
            |  
         
           23.12 
            |  
         
           69.08% 
            |  
      
|  
           2014 
            |  
         
           56.59 
            |  
         
           75.84* 
            |  
         
           19.25 
            |  
         
           34.02%
            |  
      
|  
           2015 
            |  
         
           37.92 
            |  
         
           49.46 
            |  
         
           11.54 
            |  
         
           30.43% 
            |  
      
|  
           2016 
            |  
         
           49.46 
            |  
         
           52.59 
            |  
         
           3.13 
            |  
         
           6.33%
            |  
      
|  
           2017 
            |  
         
           52.59 
            |  
         
           48.45 
            |  
         
           -4.14 
            |  
         
           -7.87%
            |  
      
|  
           2018 
            |  
         
           48.45 
            |  
         
           22.83 
            |  
         
           -25.62 
            |  
         
           -52.88% 
            |  
      
|  
           2019 
            |  
         
           22.83 
            |  
         
           30.505 
            |  
         
           7.675 
            |  
         
           33.62%
            |  
      
|  
           2020 
            |  
         
           30.505 
            |  
         
           31.27 
            |  
         
           0.765 
            |  
         
           2.51%
            |  
      
|  
           2021 
            |  
         
           31.27 
            |  
         
           46.53 
            |  
         
           15.26 
            |  
         
           48.80%
            |  
      
|  
           2022 
            |  
         
           46.53 
            |  
         
           40.06 
            |  
         
           -6.47 
            |  
         
           -13.91%
            |  
      
|  
           2023 
            |  
         
           40.06 
            |  
         
           49.83 
            |  
         
           9.77 
            |  
         
           24.39%
            |  
      
|  
           2024 
            |  
         
           49.83 
            |  
         
           44.53 
            |  
         
           -5.30 
            |  
         
           -10.64%
            |