 
 
|      Year  
           |   Beginning Price  
           |   Ending Price  
           |   Gain or Loss 
           |   Percent Gain or Loss  
           | 
| 1987 
           | 12.50 
           | 8.50 
             | -4.00 
           | -32.00% 
           | 
| 1988 
           | 8.50 
           | 16.875 
             | 8.375 
           | 98.53% 
           | 
| 1989 
           | 16.875 
           | 20.25 
             | 3.375 
           | 20.00% 
           | 
| 1990 
           | 20.25 
           | 7.75 
             | -12.50 
           | -61.73% 
           | 
| 1991 
           | 7.75 
           | 8.875 
             | 1.125 
           | 14.52% 
           | 
| 1992 
           | 8.875 
           | 15.25 
             | 6.375 
           | 71.83% 
           | 
| 1993 
           | 15.25 
           | 28.75 
             | 13.50 
           | 88.52% 
           | 
| 1994 
           | 28.75 
           | 37.00 
             | 8.25 
           | 28.70% 
           | 
| 1995 
           | 37.00 
           | 40.125 
           | 3.125 
           | 8.45% 
           | 
| 1996 
           | 40.125 
           | 55.625 
           | 15.50 
           | 38.63% 
           | 
| 1997 
           | 55.625 
           | 42.75 
           | -12.875 
           | -23.15% 
           | 
| 1998 
           | 42.75 
           | 38.125 
           | -4.625 
           | -10.82% 
           | 
| 1999 
           | 38.125 
           | 56.125 
             | 18.00 
           | 47.21% 
           | 
| 2000 
           | 56.125 
           | 73.00* 
           | 16.875 
           | 30.07% 
           | 
| 2001 
           | 36.50 
           | 45.10 
             | 8.60 
           | 23.56% 
           | 
| 2002 
           | 45.10 
           | 59.50 
             | 14.40 
           | 31.93% 
           | 
| 2003 
           | 59.50 
           | 147.96* 
           | 88.46 
           | 148.67% 
           | 
| 2004 
           | 73.98 
           | 127.00 
             | 53.02 
           | 71.67% 
           | 
| 2005 
           | 127.00 
           | 97.85 
           | -29.15 
           | -22.95% 
           | 
| 2006 
           | 97.85 
           | 99.91 
             | 2.06 
           | 2.11% 
           | 
| 2007 
           | 99.91 
           | 73.71 
           | -26.20 
           | -26.22% 
           | 
| 2008 
           | 73.71 
           | 16.73 
           | -56.98 
           | -77.30% 
           | 
| 2009 
           | 16.73 
           | 35.28 
             | 18.55 
           | 110.88% 
           | 
| 2010 
           | 35.28 
           | 46.30 
             | 11.02 
           | 31.24% 
           | 
| 2011 
           | 46.30 
           | 38.04 
             | -8.26 
           | -17.84% 
           | 
| 2012 
           | 38.04 
           | 44.64 
             | 6.60 
           | 17.35% 
           | 
| 2013 
           | 44.64 
           | 81.85 
             | 37.21 
           | 83.36% 
           | 
| 2014 
           | 81.85 
           | 106.71 
           | 24.86 
           | 30.37% 
           | 
| 2015 
           | 106.71 
           | 94.21 
           | -12.50 
           | -11.71% 
           | 
| 2016 
           | 94.21 
           | 111.16 
           | 16.95 
           | 17.99% 
           | 
| 2017 
           | 111.16 
           | 112.00* 
           | 0.84 
           | 0.76% 
           |