|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1975 
            |  
         
           15.00 
            |  
         
           21.375 
              
           |  
         
           6.375 
            |  
         
           42.50% 
            |  
      
|  
           1976 
            |  
         
           21.375 
            |  
         
           35.875 
              
           |  
         
           14.50 
            |  
         
           67.84% 
            |  
      
|  
           1977 
            |  
         
           35.875 
            |  
         
           36.00 
              
           |  
         
           0.125 
            |  
         
           0.35% 
            |  
      
|  
           1978 
            |  
         
           36.00 
            |  
         
           41.50 
              
           |  
         
           5.50 
            |  
         
           15.28% 
            |  
      
|  
           1979 
            |  
         
           41.50 
            |  
         
           61.00 
              
           |  
         
           19.50 
            |  
         
           46.99% 
            |  
      
|  
           1980 
            |  
         
           61.00 
            |  
         
           82.875 
              
           |  
         
           21.875 
            |  
         
           35.86% 
            |  
      
|  
           1981 
            |  
         
           82.875 
            |  
         
           89.00 
              
           |  
         
           6.125 
            |  
         
           7.39% 
            |  
      
|  
           1982 
            |  
         
           89.00 
            |  
         
           143.50 
              
           |  
         
           54.50 
            |  
         
           61.24% 
            |  
      
|  
           1983 
            |  
         
           143.50 
            |  
         
           186.50 
              
           |  
         
           43.00 
            |  
         
           29.97% 
            |  
      
|  
           1984 
            |  
         
           186.50 
            |  
         
           262.50* 
              
           |  
         
           76.00 
            |  
         
           40.75% 
            |  
      
|  
           1985 
            |  
         
           105.00 
            |  
         
           109.00* 
              
           |  
         
           4.00 
            |  
         
           3.81% 
            |  
      
|  
           1986 
            |  
         
           54.50 
            |  
         
           58.25 
              
           |  
         
           3.75 
            |  
         
           6.88% 
            |  
      
|  
           1987 
            |  
         
           58.25 
            |  
         
           66.625 
              
           |  
         
           8.375 
            |  
         
           14.38% 
            |  
      
|  
           1988 
            |  
         
           66.625 
            |  
         
           78.875 
              
           |  
         
           12.25 
            |  
         
           18.39% 
            |  
      
|  
           1989 
            |  
         
           78.875 
            |  
         
           124.25 
              
           |  
         
           45.375 
            |  
         
           57.53% 
            |  
      
|  
           1990 
            |  
         
           124.25 
            |  
         
           98.125 
              
           |  
         
           -26.125 
            |  
         
           -21.03% 
            |  
      
|  
           1991 
            |  
         
           98.125 
            |  
         
           109.50 
              
           |  
         
           11.375 
            |  
         
           11.59% 
            |  
      
|  
           1992 
            |  
         
           109.50 
            |  
         
           120.125 
              
           |  
         
           10.625 
            |  
         
           9.70% 
            |  
      
|  
           1993 
            |  
         
           120.125 
            |  
         
           93.00 
              
           |  
         
           -27.125 
            |  
         
           -22.58% 
            |  
      
|  
           1994 
            |  
         
           93.00 
            |  
         
           86.875 
              
           |  
         
           -6.125 
            |  
         
           -6.59% 
            |  
      
|  
           1995 
            |  
         
           86.875 
            |  
         
           156.75* 
            |  
         
           69.875 
            |  
         
           80.43% 
            |  
      
|  
           1996 
            |  
         
           78.375 
            |  
         
           94.25 
            |  
         
           15.875 
            |  
         
           20.26% 
            |  
      
|  
           1997 
            |  
         
           94.25 
            |  
         
           106.125 
                  
           |  
         
           11.875 
            |  
         
           12.60% 
            |  
      
|  
           1998 
            |  
         
           106.125 
            |  
         
           98.25 
            |  
         
           -7.875 
            |  
         
           -7.42% 
            |  
      
|  
           1999 
            |  
         
           98.25 
            |  
         
           60.6875 
              
           |  
         
           -37.5625 
            |  
         
           -38.23% 
            |  
      
|  
           2000 
            |  
         
           60.6875 
            |  
         
           103.5625 
            |  
         
           42.875 
            |  
         
           70.65% 
            |  
      
|  
           2001 
            |  
         
           103.5625 
            |  
         
           110.76* 
              
           |  
         
           7.1975 
            |  
         
           6.95% 
            |  
      
|  
           2002 
            |  
         
           55.38 
            |  
         
           44.46 
              
           |  
         
           -10.92 
            |  
         
           -19.72% 
            |  
      
|  
           2003 
            |  
         
           44.46 
            |  
         
           49.45 
            |  
         
           4.99 
            |  
         
           11.22% 
            |  
      
|  
           2004 
            |  
         
           49.45 
            |  
         
           70.30 
              
           |  
         
           20.85 
            |  
         
           42.16% 
            |  
      
|  
           2005 
            |  
         
           70.30 
            |  
         
           94.85 
            |  
         
           24.55 
            |  
         
           34.92% 
            |  
      
|  
           2006 
            |  
         
           94.85 
            |  
         
           82.94* 
              
           |  
         
           -11.91 
            |  
         
           -12.56% 
            |  
      
|  
           2007 
            |  
         
           41.47 
            |  
         
           50.34 
            |  
         
           8.87 
            |  
         
           21.39% 
            |  
      
|  
           2008 
            |  
         
           41.47 
            |  
         
           28.25 
            |  
         
           -13.22 
            |  
         
           -31.88% 
            |  
      
|  
           2009 
            |  
         
           28.25 
            |  
         
           36.35 
            |  
         
           8.10 
            |  
         
           28.67% 
            |  
      
|  
           2010 
            |  
         
           36.35 
            |  
         
           38.91 
            |  
         
           2.56 
            |  
         
           7.04% 
            |  
      
|  
           2011 
            |  
         
           38.91 
            |  
         
           37.65 
            |  
         
           -1.26 
            |  
         
           -3.24% 
            |  
      
|  
           2012 
            |  
         
           37.65 
            |  
         
           40.75 
            |  
         
           3.10 
            |  
         
           8.23% 
            |  
      
|  
           2013 
            |  
         
           40.75 
            |  
         
           48.24 
            |  
         
           7.49 
            |  
         
           18.38% 
            |  
      
|  
           2014 
            |  
         
           48.24 
            |  
         
           42.02 
            |  
         
           -6.22 
            |  
         
           -12.89% 
            |  
      
|  
           2015 
            |  
        
           42.02 
            |  
         
           38.40 
            |  
         
           -3.62 
            |  
         
           -8.61% 
            |  
      
|  
           2016 
            |  
         
           38.40 
            |  
         
           46.83 
            |  
         
           8.43 
            |  
         
           21.95% 
            |  
      
|  
           2017 
            |  
         
           46.83 
            |  
         
           50.03 
            |  
         
           3.20 
            |  
         
           6.83% 
            |  
      
|  
           2018 
            |  
        
           50.03 
            |  
         
           45.52 
            |  
         
           -4.51 
            |  
         
           -9.01% 
            |  
      
|  
           2019 
            |  
        
           45.52 
            |  
         
           52.49 
            |  
         
           6.97 
            |  
         
           15.31% 
            |  
      
|  
           2020 
            |  
        
           52.49 
            |  
         
           45.02 
            |  
         
           -7.47 
            |  
         
           -14.23% 
            |  
      
|  
           2021 
            |  
        
           45.02 
            |  
         
           57.76 
            |  
         
           12.74 
            |  
         
           28.30% 
            |  
      
|  
           2022 
            |  
        
           57.76 
            |  
         
           58.33 
            |  
         
           0.57 
            |  
         
           0.99% 
            |  
      
|  
           2023 
            |  
        
           58.33 
            |  
         
           69.59 
            |  
         
           11.26 
            |  
         
           19.30% 
            |  
      
|  
           2024 
            |  
        
           69.59 
            |  
         
           84.69 
            |  
         
           15.10 
            |  
         
           21.70% 
            |