| Date | Price |
| Wednesday, January 03, 2007 | $3.70 |
| Wednesday, January 03, 2007 | $3.70 |
| Wednesday, January 10, 2007 | $3.60 |
| Wednesday, January 17, 2007 | $4.08 |
| Friday, January 26, 2007 | $4.01 |
| Wednesday, January 31, 2007 | $4.04 |
| Wednesday, February 07, 2007 | $3.92 |
| Wednesday, February 14, 2007 | $4.08 |
| Wednesday, February 21, 2007 | $4.26 |
| Wednesday, February 28, 2007 | $4.25 |
| Wednesday, March 07, 2007 | $4.26 |
| Wednesday, March 14, 2007 | $4.05 |
| Wednesday, March 21, 2007 | $4.10 |
| Wednesday, March 28, 2007 | $3.88 |
| Wednesday, April 04, 2007 | $3.59 |
| Wednesday, April 11, 2007 | $3.61 |
| Wednesday, April 18, 2007 | $3.64 |
| Wednesday, April 25, 2007 | $3.71 |
| Wednesday, May 02, 2007 | $3.82 |
| Wednesday, May 09, 2007 | $3.66 |
| Wednesday, May 16, 2007 | $3.76 |
| Wednesday, May 16, 2007 | $3.76 |
| Wednesday, May 23, 2007 | $3.68 |
| Wednesday, May 30, 2007 | $3.82 |
| Wednesday, June 06, 2007 | $4.04 |
| Wednesday, June 13, 2007 | $4.04 |
| Wednesday, June 20, 2007 | $3.94 |
| Wednesday, June 27, 2007 | $3.44 |
| Thursday, July 05, 2007 | $3.33 |
| Wednesday, July 11, 2007 | $3.43 |
| Wednesday, July 18, 2007 | $3.27 |
| Wednesday, July 25, 2007 | $3.12 |
| Wednesday, August 01, 2007 | $3.19 |
| Wednesday, August 08, 2007 | $3.41 |
| Wednesday, August 15, 2007 | $3.28 |
| Wednesday, August 15, 2007 | $0.00 |
| Wednesday, August 22, 2007 | $3.48 |
| Wednesday, August 29, 2007 | $3.23 |
| Wednesday, September 05, 2007 | $3.46 |
| Wednesday, September 12, 2007 | $3.56 |
| Wednesday, September 19, 2007 | $3.58 |
| Wednesday, September 26, 2007 | $3.75 |
| Wednesday, October 03, 2007 | $3.45 |
| Wednesday, October 10, 2007 | $3.42 |
| Wednesday, October 17, 2007 | $3.58 |
| Wednesday, October 24, 2007 | $3.56 |
| Wednesday, October 31, 2007 | $3.76 |
| Wednesday, November 07, 2007 | $3.84 |
| Wednesday, November 14, 2007 | $3.83 |
| Wednesday, November 21, 2007 | $3.82 |
| Wednesday, November 28, 2007 | $3.87 |
| Wednesday, December 05, 2007 | $3.94 |
| Wednesday, December 12, 2007 | $4.17 |
| Wednesday, December 19, 2007 | $4.35 |
| Wednesday, December 26, 2007 | $4.52 |
| Wednesday, January 02, 2008 | $4.62 |
| Wednesday, January 09, 2008 | $4.77 |
| Wednesday, January 16, 2008 | $5.02 |
| Wednesday, January 23, 2008 | $4.69 |
| Wednesday, January 30, 2008 | $4.98 |
| Wednesday, February 06, 2008 | $5.02 |
| Wednesday, February 13, 2008 | $4.97 |
| Wednesday, February 20, 2008 | $5.22 |
| Wednesday, February 27, 2008 | $5.25 |
| Wednesday, March 05, 2008 | $5.67 |
| Wednesday, March 12, 2008 | $5.67 |
| Wednesday, March 19, 2008 | $5.27 |
| Wednesday, March 26, 2008 | $5.52 |
| Wednesday, April 02, 2008 | $5.96 |
| Wednesday, April 09, 2008 | $6.05 |
| Wednesday, April 16, 2008 | $6.04 |
| Wednesday, April 23, 2008 | $5.88 |
| Wednesday, April 30, 2008 | $6.00 |
| Wednesday, May 07, 2008 | $6.13 |
| Wednesday, May 14, 2008 | $5.96 |
| Wednesday, May 21, 2008 | $6.07 |
| Wednesday, May 28, 2008 | $5.92 |
| Wednesday, June 04, 2008 | $6.09 |
| Wednesday, June 11, 2008 | $7.03 |
| Wednesday, June 18, 2008 | $7.46 |
| Wednesday, June 25, 2008 | $7.30 |
| Wednesday, July 02, 2008 | $7.61 |
| Wednesday, July 09, 2008 | $6.95 |
| Wednesday, July 16, 2008 | $6.58 |
| Wednesday, July 23, 2008 | $5.71 |
| Wednesday, July 30, 2008 | $6.02 |
| Wednesday, August 06, 2008 | $5.08 |
| Wednesday, August 13, 2008 | $5.39 |
| Wednesday, August 20, 2008 | $5.75 |
| Wednesday, August 27, 2008 | $5.78 |
| Wednesday, September 10, 2008 | $5.37 |
| Wednesday, September 24, 2008 | $5.63 |
| Wednesday, October 01, 2008 | $4.84 |
| Wednesday, October 08, 2008 | $4.29 |
| Wednesday, October 15, 2008 | $3.88 |
| Wednesday, October 22, 2008 | $3.85 |
| Wednesday, October 29, 2008 | $4.21 |
| Wednesday, November 05, 2008 | $3.90 |
| Wednesday, November 12, 2008 | $3.70 |
| Thursday, September 03, 2009 | $5.62 |
|
|
| Date | Price |
| Wednesday, January 03, 2007 | $6.82 |
| Wednesday, January 10, 2007 | $6.65 |
| Wednesday, January 17, 2007 | $7.22 |
| Friday, January 26, 2007 | $7.15 |
| Wednesday, January 31, 2007 | $7.19 |
| Wednesday, February 07, 2007 | $7.41 |
| Wednesday, February 14, 2007 | $7.50 |
| Wednesday, February 21, 2007 | $7.81 |
| Wednesday, February 28, 2007 | $7.73 |
| Wednesday, March 07, 2007 | $7.57 |
| Wednesday, March 14, 2007 | $7.54 |
| Wednesday, March 21, 2007 | $7.67 |
| Wednesday, March 28, 2007 | $7.71 |
| Wednesday, April 04, 2007 | $7.61 |
| Wednesday, April 11, 2007 | $7.46 |
| Wednesday, April 18, 2007 | $7.16 |
| Wednesday, April 25, 2007 | $7.22 |
| Wednesday, May 02, 2007 | $7.49 |
| Wednesday, May 09, 2007 | $7.47 |
| Wednesday, May 16, 2007 | $7.93 |
| Wednesday, May 16, 2007 | $7.93 |
| Wednesday, May 23, 2007 | $8.00 |
| Wednesday, May 30, 2007 | $8.08 |
| Wednesday, June 06, 2007 | $8.26 |
| Wednesday, June 13, 2007 | $8.26 |
| Wednesday, June 20, 2007 | $8.39 |
| Wednesday, June 27, 2007 | $8.04 |
| Thursday, July 05, 2007 | $8.60 |
| Wednesday, July 11, 2007 | $8.96 |
| Wednesday, July 18, 2007 | $8.51 |
| Wednesday, July 25, 2007 | $8.15 |
| Wednesday, August 01, 2007 | $8.26 |
| Wednesday, August 08, 2007 | $8.55 |
| Wednesday, August 15, 2007 | $8.39 |
| Wednesday, August 22, 2007 | $8.31 |
| Wednesday, August 29, 2007 | $8.58 |
| Wednesday, September 05, 2007 | $9.03 |
| Wednesday, September 12, 2007 | $9.38 |
| Wednesday, September 19, 2007 | $9.71 |
| Wednesday, September 26, 2007 | $9.91 |
| Wednesday, October 03, 2007 | $9.53 |
| Wednesday, October 10, 2007 | $9.50 |
| Wednesday, October 17, 2007 | $9.74 |
| Wednesday, October 24, 2007 | $9.76 |
| Wednesday, October 31, 2007 | $10.10 |
| Wednesday, November 07, 2007 | $10.24 |
| Wednesday, November 14, 2007 | $310.80 |
| Wednesday, November 21, 2007 | $10.84 |
| Wednesday, November 28, 2007 | $10.97 |
| Wednesday, December 05, 2007 | $10.99 |
| Wednesday, December 12, 2007 | $11.52 |
| Wednesday, December 19, 2007 | $11.59 |
| Wednesday, December 26, 2007 | $12.21 |
| Wednesday, January 02, 2008 | $12.49 |
| Wednesday, January 09, 2008 | $12.62 |
| Wednesday, January 16, 2008 | $12.77 |
| Wednesday, January 23, 2008 | $11.90 |
| Wednesday, January 30, 2008 | $12.76 |
| Wednesday, February 06, 2008 | $13.18 |
| Wednesday, February 13, 2008 | $13.28 |
| Wednesday, February 20, 2008 | $14.20 |
| Wednesday, February 27, 2008 | $14.59 |
| Wednesday, March 05, 2008 | $14.90 |
| Wednesday, March 12, 2008 | $13.95 |
| Wednesday, March 19, 2008 | $12.57 |
| Wednesday, March 26, 2008 | $13.52 |
| Wednesday, April 02, 2008 | $12.43 |
| Wednesday, April 09, 2008 | $13.13 |
| Wednesday, April 16, 2008 | $13.45 |
| Wednesday, April 23, 2008 | $13.72 |
| Wednesday, April 30, 2008 | $13.02 |
| Wednesday, May 07, 2008 | $13.09 |
| Wednesday, May 14, 2008 | $13.80 |
| Wednesday, May 21, 2008 | $13.49 |
| Wednesday, May 28, 2008 | $13.72 |
| Wednesday, June 04, 2008 | $13.70 |
| Wednesday, June 11, 2008 | $15.16 |
| Wednesday, June 18, 2008 | $15.56 |
| Wednesday, June 25, 2008 | $15.38 |
| Wednesday, July 02, 2008 | $16.40 |
| Wednesday, July 09, 2008 | $15.72 |
| Wednesday, July 16, 2008 | $15.73 |
| Wednesday, July 23, 2008 | $13.94 |
| Wednesday, July 30, 2008 | $13.94 |
| Wednesday, August 06, 2008 | $12.20 |
| Wednesday, August 13, 2008 | $12.78 |
| Wednesday, August 20, 2008 | $12.94 |
| Wednesday, August 27, 2008 | $13.48 |
| Wednesday, September 10, 2008 | $11.78 |
| Wednesday, September 24, 2008 | $11.87 |
| Wednesday, October 01, 2008 | $10.53 |
| Wednesday, October 08, 2008 | $9.64 |
| Wednesday, October 15, 2008 | $8.58 |
| Wednesday, October 22, 2008 | $8.59 |
| Wednesday, October 29, 2008 | $9.37 |
| Wednesday, November 05, 2008 | $9.04 |
| Wednesday, November 12, 2008 | $8.85 |
| Thursday, September 03, 2009 | $12.52 |
|
|
| Year | Date | Price |
| 1991 | Thursday, August 01, 1991 | $2.72 |
| 1992 | Tuesday, March 10, 1992 | $2.75 |
| 1993 | Monday, December 20, 1993 | $2.91 |
| 1994 | Friday, June 17, 1994 | $2.77 |
| 1995 | Monday, December 11, 1995 | $3.41 |
| 1996 | Friday, July 12, 1996 | $3.89 |
| 1997 | Tuesday, August 13, 1996 | $3.10 |
| 1998 | Wednesday, October 22, 1997 | $2.99 |
| 1999 | Monday, October 13, 1997 | $2.91 |
| 2000 | Wednesday, June 24, 1998 | $2.83 |
| 2001 | Wednesday, May 03, 2000 | $2.75 |
| 2002 | Friday, September 06, 2002 | $2.96 |
| 2003 | Tuesday, March 06, 2001 | $2.69 |
| 2004 | Thursday, April 08, 2004 | $3.41 |
| 2005 | Thursday, April 08, 2004 | $2.88 |
| 2006 | Thursday, November 30, 2006 | $3.78 |
|
|
|
| Year | Date | Price |
| 1991 | Thursday, July 18, 1991 | $2.20 |
| 1992 | Wednesday, November 11, 1992 | $2.04 |
| 1993 | Monday, June 14, 1993 | $2.28 |
| 1994 | Wednesday, November 23, 1994 | $2.11 |
| 1995 | Tuesday, June 27, 1995 | $2.36 |
| 1996 | Tuesday, June 20, 1995 | $2.50 |
| 1997 | Thursday, July 17, 1997 | $2.28 |
| 1998 | Tuesday, September 01, 1998 | $1.98 |
| 1999 | Monday, December 20, 1999 | $1.80 |
| 2000 | Friday, August 11, 2000 | $1.86 |
| 2001 | Wednesday, November 28, 2001 | $1.98 |
| 2002 | Friday, April 12, 2002 | $2.16 |
| 2003 | Friday, July 25, 2003 | $2.09 |
| 2004 | Thursday, November 11, 2004 | $1.95 |
| 2005 | Monday, November 28, 2005 | $1.86 |
| 2006 | Friday, August 18, 2006 | $2.33 |
|
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