 
 
|      Year  
           |   Beginning Price  
           |   Ending Price  
           |   Gain or Loss 
           |   Percent Gain or Loss  
           | 
| 1975 
           | 8.875 
           | 12.125 
           | 3.25 
           | 36.62% 
           | 
| 1976 
           | 12.125 
           | 24.1875* 
           | 12.0625 
           | 99.48% 
           | 
| 1977 
           | 16.125 
           | 13.875 
           | -2.25 
           | -13.95% 
           | 
| 1978 
           | 13.875 
           | 12.50 
           | -1.375 
           | -9.91% 
           | 
| 1979 
           | 12.50 
           | 19.875 
           | 7.375 
           | 59.00% 
           | 
| 1980 
           | 19.875 
           | 30.875 
           | 11.00 
           | 55.35% 
           | 
| 1981 
           | 30.875 
           | 18.00 
           | -12.875 
           | -41.70% 
           | 
| 1982 
           | 18.00 
           | 11.125 
           | -6.875 
           | -38.19% 
           | 
| 1983 
           | 11.125 
           | 10.625 
               | -0.50 
           | -4.49% 
           | 
| 1984 
           | 10.625 
           | 1.875 
           | -8.75 
           | -82.35% 
           | 
| 1985 
           | 1.875 
           | 1.75 
           | -0.125 
           | -6.67% 
           | 
| 1986 
           | 1.75 
           | 0.625 
           | -1.125 
           | -64.29% 
           | 
| 1987 
           | 0.625 
           | 1.9375 
           | 1.3125 
           | 210.00% 
           | 
| 1988 
           | 1.9375 
           | 3.375 
           | 1.4375 
           | 74.19% 
           | 
| 1989 
           | 3.375 
           | 11.75 
           | 8.375 
           | 248.15% 
           | 
| 1990 
           | 11.75 
           | 7.75 
           | -4.00 
           | -34.04% 
           | 
| 1991 
           | 7.75 
           | 8.625 
           | 0.875 
           | 11.29% 
           | 
| 1992 
           | 8.625 
           | 10.875 
           | 2.25 
           | 26.09% 
           | 
| 1993 
           | 10.875 
           | 13.75 
           | 2.875 
           | 26.44% 
           | 
| 1994 
           | 13.75 
           | 13.00 
           | -0.75 
           | -5.45% 
           | 
| 1995 
           | 13.00 
           | 12.625 
           | -0.375 
           | -2.88% 
           | 
| 1996 
           | 12.625 
           | 19.375 
           | 6.75 
           | 53.47% 
           | 
| 1997 
           | 19.375 
           | 21.375 
           | 2.00 
           | 10.32% 
           | 
| 1998 
           | 21.375 
           | 11.875 
           | -9.50 
           | -44.44% 
           | 
| 1999 
           | 11.875 
           | 9.375 
           | -2.50 
           | -21.05% 
           | 
| 2000 
           | 9.375 
           | 21.546875 
           | 12.171875 
           | 129.83% 
           | 
| 2001 
           | 21.546875 
           | 17.76 
           | -3.786875 
           | -17.58% 
           | 
| 2002 
           | 17.76 
           | 21.92 
           | 4.16 
           | 23.42% 
           | 
| 2003 
           | 21.92 
           | 24.52 
           | 2.60 
           | 11.86% 
           | 
| 2004 
           | 24.52 
           | 32.47 
           | 7.95 
           | 32.42% 
           | 
| 2005 
           | 32.47 
           | 29.20 
           | -3.27 
           | -10.07% 
           | 
| 2006 
           | 29.20 
           | 36.09 
           | 6.89 
           | 23.60% 
               | 
| 2007 
           | 36.09 
           | 56.65 
           | 20.56 
           | 56.97% 
               | 
| 2008 
           | 56.65 
           | 26.79 
           | -29.86 
           | -52.71% 
           | 
| 2009 
           | 26.79 
           | 38.45 
           | 11.66 
           | 43.52% 
           | 
| 2010 
           | 38.45 
           | 47.35 
           | 8.90 
           | 23.15% 
           | 
| 2011 
           | 47.35 
           | 47.39 
           | 0.04 
           | 0.08% 
           | 
| 2012 
           | 47.39 
           | 53.66 
           | 6.27 
           | 13.23% 
           | 
| 2013 
           | 53.66 
           | 75.06 
           | 21.40 
           | 39.88% 
           | 
| 2014 
           | 75.06 
           | 65.79 
           | -9.27 
           | -12.35% 
           | 
| 2015 
           | 65.79 
           | 25.90 
           | -39.89 
           | -60.63% 
           | 
| 2016 
           | 25.90 
           | 20.48 
           | -5.42 
           | -20.93% 
           | 
| 2017 
           | 20.48 
           | 13.47 
           | -7.01 
           | -34.23% 
           | 
| 2018 
           | 13.47 
           | 2.43 
           | -11.04 
           | -81.96% 
           | 
| 2019 
           | 2.43 
           | 0* 
           | -2.43 
           | -100.00% 
           |