|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1985 
            |  
         
           11.00 
            |  
         
           17.00 
              
           |  
         
           6.00 
            |  
         
           54.55% 
            |  
      
|  
           1986 
            |  
         
           17.00 
            |  
         
           9.25 
              
           |  
         
           -7.75 
            |  
         
           -45.59% 
            |  
      
|  
           1987 
            |  
         
           9.25 
            |  
         
           17.8125* 
              
           |  
         
           8.5625 
            |  
         
           92.57% 
            |  
      
|  
           1988 
            |  
         
           11.875 
            |  
         
           11.875 
              
           |  
         
           0 
            |  
         
           0.00% 
            |  
      
|  
           1989 
            |  
         
           11.875 
            |  
         
           8.125 
              
           |  
         
           -3.75 
            |  
         
           -31.58% 
            |  
      
|  
           1990 
            |  
         
           8.125 
            |  
         
           3.375 
              
           |  
         
           -4.75 
            |  
         
           -58.46% 
            |  
      
|  
           1991 
            |  
         
           3.375 
            |  
         
           4.50 
              
           |  
         
           1.125 
                  
           |  
         
           33.33% 
            |  
      
|  
           1992 
            |  
         
           4.50 
            |  
         
           6.25 
              
           |  
         
           1.75 
            |  
         
           38.89% 
            |  
      
|  
           1993 
            |  
         
           6.25 
            |  
         
           17.125 
              
           |  
         
           10.875 
            |  
         
           174.00% 
            |  
      
|  
           1994 
            |  
         
           17.125 
            |  
         
           29.625 
              
           |  
         
           12.50 
            |  
         
           72.99% 
            |  
      
|  
           1995 
            |  
         
           29.625 
            |  
         
           25.75* 
            |  
         
           -3.875 
            |  
         
           -13.08% 
            |  
      
|  
           1996 
            |  
         
           12.875 
            |  
         
           13.625 
              
           |  
         
           0.75 
            |  
         
           5.83% 
            |  
      
|  
           1997 
            |  
         
           13.625 
            |  
         
           9.4375 
              
           |  
         
           -4.1875 
            |  
         
           -30.73% 
            |  
      
|  
           1998 
            |  
         
           9.4375 
            |  
         
           6.125 
              
           |  
         
           -3.3125 
            |  
         
           -35.10% 
            |  
      
|  
           1999 
            |  
         
           6.125 
            |  
         
           29.00 
              
           |  
         
           22.875 
            |  
         
           373.47% 
            |  
      
|  
           2000 
            |  
         
           29.00 
            |  
         
           33.125 
              
           |  
         
           4.125 
            |  
         
           14.22% 
            |  
      
|  
           2001 
            |  
         
           33.125 
            |  
         
           26.59 
              
           |  
         
           -6.535 
            |  
         
           -19.73% 
            |  
      
|  
           2002 
            |  
         
           26.59 
            |  
         
           8.37 
              
           |  
         
           -18.22 
            |  
         
           -68.52% 
            |  
      
|  
           2003 
            |  
         
           8.37 
            |  
         
           17.17 
              
           |  
         
           8.80 
            |  
         
           105.14% 
            |  
      
|  
           2004 
            |  
         
           17.17 
            |  
         
           11.56 
              
           |  
         
           -5.61 
            |  
         
           -32.67% 
            |  
      
|  
           2005 
            |  
         
           11.56 
            |  
         
           13.18 
              
           |  
         
           1.62 
            |  
         
           14.01% 
            |  
      
|  
           2006 
            |  
         
           13.18 
            |  
         
           15.48 
              
           |  
         
           2.30 
            |  
         
           17.45% 
            |  
      
|  
           2007 
            |  
         
           15.48 
            |  
         
           11.31 
            |  
         
           -4.17 
            |  
         
           -26.94% 
            |  
      
|  
           2008 
            |  
         
           11.31 
            |  
         
           5.61 
            |  
         
           -5.70 
            |  
         
           -50.40% 
            |  
      
|  
           2009 
            |  
         
           5.61 
            |  
         
           6.47 
              
           |  
         
           0.86 
            |  
         
           15.33% 
            |  
      
|  
           2010 
            |  
         
           6.47 
            |  
         
           6.66 
              
           |  
         
           0.19 
            |  
         
           2.94% 
            |  
      
|  
           2011 
            |  
         
           6.66 
            |  
         
           5.46 
              
           |  
         
           -1.20 
            |  
         
           -18.02% 
            |  
      
|  
           2012 
            |  
         
           5.46 
            |  
         
           7.30 
              
           |  
         
           1.84 
            |  
         
           33.70% 
            |  
      
|  
           2013 
            |  
         
           7.30 
            |  
         
           10.18 
              
           |  
         
           2.88 
            |  
         
           39.45% 
            |  
      
|  
           2014 
            |  
         
           10.18 
            |  
         
           19.60 
            |  
         
           9.42 
            |  
         
           92.53% 
            |  
      
|  
           2015 
            |  
        
           19.60 
            |  
         
           26.35 
            |  
         
           6.75 
            |  
         
           34.44% 
            |  
      
|  
           2016 
            |  
         
           26.35 
            |  
         
           23.56 
              
           |  
         
           -2.79 
            |  
         
           -10.59% 
            |  
      
|  
           2017 
            |  
        
           23.56 
            |  
         
           29.73 
            |  
         
           6.17 
            |  
         
           26.19% 
            |  
      
|  
           2018 
            |  
        
           29.73 
            |  
         
           48.43 
            |  
         
           18.70 
            |  
         
           62.90% 
            |  
      
|  
           2019 
            |  
        
           48.43 
            |  
         
           49.00** 
            |  
         
           0.57 
            |  
         
           1.18% 
            |