To better serve you, we have included an archive of 2004 - Present prices. Clicking the Adobe PDF link will open the chart in PDF. Clicking the MS Excel link will launch the worksheet in Excel.
| Month | Excel File
|
|---|---|
| April 30, 2012
|
Escalated - Constant |
| March 31, 2012
|
Escalated - Constant
|
| February 29, 2012
|
Escalated - Constant
|
| January 31, 2012
|
XLS |
| December 31, 2011
|
XLS |
| November 30, 2011 | XLS |
| October 31, 2011 | XLS |
| September 30, 2011 | XLS |
| August 31, 2011 | XLS |
| July 31, 2011 | XLS |
| June 30, 2011 | XLS |
| May 31, 2011 | XLS |
| April 30, 2011 | XLS |
| March 31, 2011 | XLS |
| February 28, 2011 | XLS |
| January 31, 2011 | XLS |
| December 31, 2010 | XLS |
| November 30, 2010 | XLS |
| October 31, 2010 | XLS |
| September 30, 2010 | XLS |
| August 31, 2010 | XLS |
| July 31, 2010 | XLS |
| June 30, 2010 | XLS |
| May 31, 2010 | XLS |
| April 30, 2010 | XLS |
| March 31, 2010 | XLS |
| February 28, 2010 | XLS |
| January 31, 2010 | XLS |
| December 31, 2009 | XLS |
| November 30, 2009 | XLS |
| October 31, 2009 | XLS |
| September 30, 2009 | XLS |
| August 31, 2009 | XLS |
| July 31, 2009 | XLS |
| June 30, 2009 | XLS |
| May 31, 2009 | XLS |
| April 30, 2009 | XLS |
| March 31, 2009 | XLS |
| February 28, 2009 | XLS |
| January 31, 2009 | XLS |
| December 31, 2008 | XLS |
| November 30, 2008 | XLS |
| October 31, 2008 | XLS |
| September 30, 2008 | XLS |
| August 31, 2008 | XLS |
| July 31, 2008 | XLS |
| June 30, 2008 | XLS |
| May 31, 2008 | XLS |
| April 30, 2008 | XLS |
| March 31, 2008 | XLS |
| February 29, 2008 | XLS |
| January 31, 2008 | XLS |
| December 31, 2007 | XLS |
| November 30, 2007 | XLS |
| October 31, 2007 | XLS |
| September 30, 2007 | XLS |
| August 31, 2007 | XLS |
| July 31, 2007 | XLS |
| June 30, 2007 | XLS |
| May 31, 2007 | XLS |
| April 30, 2007 | XLS |
| March 31, 2007 | XLS |
| February 28, 2007 | XLS |
| January 31, 2007 | XLS |
| December 31, 2006 | XLS |
| November 30, 2006 | XLS |
| October 31, 2006 | XLS |
| September 30, 2006 | XLS |
| August 31, 2006 | XLS |
| July 31, 2006 | XLS |
| June 30, 2006 | XLS |
| May 31, 2006 | XLS |
| April 30, 2006 | XLS |
| March 31, 2006 | XLS |
| February 28, 2006 | XLS |
| January 31, 2006 | XLS |
| December 31, 2005 | XLS |
| November 30, 2005 | XLS |
| October 31, 2005 | XLS |
| September 30, 2005 | XLS |
| August 31, 2005 | XLS |
| July 31, 2005 | XLS |
| June 30, 2005 | XLS |
| May 31, 2005 | XLS |
| April 30, 2005 | XLS |
| March 31, 2005 | XLS |
| February 28, 2005 | XLS |
| January 31, 2005 | XLS |
| December 31, 2004 | XLS |
| November 30, 2004 | XLS |
| October 31, 2004 | XLS |
| September 30, 2004 | XLS |
| August 31, 2004 | XLS |
| July 31, 2004 | XLS |
| June 30, 2004 | XLS |
| May 31, 2004 | XLS |
| April 30, 2004 | XLS |
| March 31, 2004 | XLS |
| February 29, 2004 | XLS |
| January 31, 2004 | XLS |