|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1975 
            |  
         
           15.25 
            |  
         
           21.50 
              
           |  
         
           6.25 
            |  
         
           40.98% 
            |  
      
|  
           1976 
            |  
         
           21.50 
            |  
         
           27.625 
              
           |  
         
           6.125 
            |  
         
           28.49% 
            |  
      
|  
           1977 
            |  
         
           27.625 
            |  
         
           24.375 
              
           |  
         
           -3.25 
            |  
         
           -11.76% 
            |  
      
|  
           1978 
            |  
         
           24.375 
            |  
         
           18.375 
              
           |  
         
           -6.00 
            |  
         
           -24.62% 
            |  
      
|  
           1979 
            |  
         
           18.375 
                
           |  
         
           18.875 
              
           |  
         
           0.50 
            |  
         
           2.72% 
            |  
      
|  
           1980 
            |  
         
           18.875 
            |  
         
           20.25 
              
           |  
         
           1.375 
            |  
         
           7.28% 
            |  
      
|  
           1981 
            |  
         
           20.25 
            |  
         
           22.50 
              
           |  
         
           2.25 
            |  
         
           11.11% 
            |  
      
|  
           1982 
            |  
         
           22.50 
            |  
         
           26.625 
              
           |  
         
           4.125 
            |  
         
           18.33% 
            |  
      
|  
           1983 
            |  
         
           26.625 
            |  
         
           32.375 
              
           |  
         
           5.75 
            |  
         
           21.60% 
            |  
      
|  
           1984 
            |  
         
           32.375 
            |  
         
           40.00 
              
           |  
         
           7.625 
            |  
         
           23.55% 
            |  
      
|  
           1985 
            |  
         
           40.00 
            |  
         
           69.50 
              
           |  
         
           29.50 
            |  
         
           73.75% 
            |  
      
|  
           1986 
            |  
         
           69.50 
            |  
         
           103.50* 
              
           |  
         
           34.00 
            |  
         
           48.92% 
            |  
      
|  
           1987 
            |  
         
           51.75 
            |  
         
           52.375 
              
           |  
         
           0.625 
            |  
         
           1.21% 
            |  
      
|  
           1988 
            |  
         
           52.375 
            |  
         
           64.25 
              
           |  
         
           11.875 
            |  
         
           22.67% 
            |  
      
|  
           1989 
            |  
         
           64.25 
            |  
         
           67.625 
              
           |  
         
           3.375 
            |  
         
           5.25% 
            |  
      
|  
           1990 
            |  
         
           67.625 
            |  
         
           75.875 
              
           |  
         
           8.25 
            |  
         
           12.20% 
            |  
      
|  
           1991 
            |  
         
           75.875 
            |  
         
           130.75* 
              
           |  
         
           54.875 
            |  
         
           72.32% 
            |  
      
|  
           1992 
            |  
         
           65.375 
            |  
         
           67.00 
              
           |  
         
           1.625 
            |  
         
           2.49% 
            |  
      
|  
           1993 
            |  
         
           67.00 
            |  
         
           56.75 
              
           |  
         
           -10.25 
            |  
         
           -15.30% 
            |  
      
|  
           1994 
            |  
         
           56.75 
            |  
         
           58.125 
              
           |  
         
           1.375 
            |  
         
           2.42% 
            |  
      
|  
           1995 
            |  
         
           58.125 
            |  
         
           77.25 
            |  
         
           19.125 
            |  
         
           32.90% 
            |  
      
|  
           1996 
            |  
         
           77.25 
            |  
         
           65.625 
            |  
         
           -11.625 
            |  
         
           -15.05% 
            |  
      
|  
           1997 
            |  
         
           65.625 
            |  
         
           99.25* 
            |  
         
           33.625 
            |  
         
           51.24% 
            |  
      
|  
           1998 
            |  
         
           49.625 
            |  
         
           34.125 
            |  
         
           -15.50 
            |  
         
           -31.23% 
            |  
      
|  
           1999 
            |  
         
           34.125 
            |  
         
           30.8125 
              
           |  
         
           -3.3125 
            |  
         
           -9.71% 
            |  
      
|  
           2000 
            |  
         
           30.8125 
            |  
         
           26.25 
            |  
         
           -4.5625 
            |  
         
           -14.81% 
            |  
      
|  
           2001 
            |  
         
           26.25 
            |  
         
           30.10 
              
           |  
         
           3.85 
            |  
         
           14.67% 
            |  
      
|  
           2002 
            |  
         
           30.10 
            |  
         
           34.27 
              
           |  
         
           4.17 
            |  
         
           13.85% 
            |  
      
|  
           2003 
            |  
         
           34.27 
            |  
         
           38.08 
            |  
         
           3.81 
            |  
         
           11.12% 
            |  
      
|  
           2004 
            |  
         
           38.08 
            |  
         
           44.66 
              
           |  
         
           6.58 
            |  
         
           17.28% 
            |  
      
|  
           2005 
            |  
         
           44.66 
            |  
         
           43.22 
            |  
         
           -1.44 
            |  
         
           -3.22% 
            |  
      
|  
           2006 
            |  
         
           43.22 
            |  
         
           50.06 
              
           |  
         
           6.84 
            |  
         
           15.83% 
            |  
      
|  
           2007 
            |  
         
           50.06 
            |  
         
           52.43 
            |  
         
           2.37 
            |  
         
           4.73% 
            |  
      
|  
           2008 
            |  
         
           52.43 
            |  
         
           43.85 
            |  
         
           -8.58 
            |  
         
           -16.36% 
            |  
      
|  
           2009 
            |  
         
           43.85 
            |  
         
           53.20 
            |  
         
           9.35 
            |  
         
           21.32% 
            |  
      
|  
           2010 
            |  
         
           53.20 
            |  
         
           51.08 
            |  
         
           -2.12 
            |  
         
           -3.98% 
            |  
      
|  
           2011 
            |  
         
           51.08 
            |  
         
           50.57 
            |  
         
           -0.51 
            |  
         
           -1.00% 
            |  
      
|  
           2012 
            |  
         
           50.57 
            |  
         
           55.85 
            |  
         
           5.28 
            |  
         
           10.44% 
            |  
      
|  
           2013 
            |  
         
           55.85 
            |  
         
           61.07 
            |  
         
           5.22 
            |  
         
           9.35% 
            |  
      
|  
           2014 
            |  
         
           61.07 
            |  
         
           65.44 
            |  
         
           4.37 
            |  
         
           7.16% 
            |  
      
|  
           2015 
            |  
        
           65.44 
            |  
         
           72.27 
            |  
         
           6.83 
            |  
         
           10.44% 
            |  
      
|  
           2016 
            |  
        
           72.27 
            |  
         
           73.71 
            |  
         
           1.44 
            |  
         
           1.99% 
            |  
      
|  
           2017 
            |  
         
           73.71 
            |  
         
           67.98 
            |  
         
           -5.73 
            |  
         
           -7.77% 
            |  
      
|  
           2018 
            |  
         
           67.98 
            |  
         
           57.01 
            |  
         
           -10.97 
            |  
         
           -16.14% 
            |  
      
|  
           2019 
            |  
         
           57.01 
            |  
         
           69.16 
            |  
         
           12.15 
            |  
         
           21.31% 
            |  
      
|  
           2020 
            |  
         
           69.16 
            |  
         
           62.23 
            |  
         
           -6.93 
            |  
         
           -10.02% 
            |  
      
|  
           2021 
            |  
         
           62.23 
            |  
         
           64.42 
            |  
         
           2.19 
            |  
         
           3.52% 
            |  
      
|  
           2022 
            |  
         
           64.42 
            |  
         
           71.24 
            |  
         
           6.82 
            |  
         
           10.59% 
            |  
      
|  
           2023 
            |  
         
           71.24 
            |  
         
           59.195* 
            |  
         
           -12.045 
            |  
         
           -16.91% 
            |  
      
|  
           2024 
            |  
         
           55.91 
            |  
         
           80.97 
            |  
         
           25.06 
            |  
         
           44.82% 
            |