| Surcharge |
Effective Date |
| 13.5% |
February 5, 2012 - March 3, 2012 |
| 7.5% |
February 5, 2012 - March 3, 2012 |
| 14% |
January 1, 2012 - February 4, 2012 |
| 8% |
January 1, 2012 - February 4, 2012 |
| 13.5% |
December 4, 2011 - December 31, 2011 |
| 7.5% |
December 4, 2011 - December 31, 2011 |
| 14% |
November 6, 2011 - December 3, 2011 |
| 8% |
November 6, 2011 - December 3, 2011 |
| 7.5% |
October 2, 2011 - November 5, 2011 |
| 13.5% |
October 2, 2011 - November 5, 2011 |
| 14.5% |
September 4, 2011 - October 1, 2011 |
| 8% |
September 4, 2011 - October 1, 2011 |
| 14% |
August 7, 2011 - September 3, 2011 |
| 8% |
August 7, 2011 - September 3, 2011 |
| 8% |
July 3, 2011 - August 6, 2011 |
| 14% |
July 3, 2011 - August 6, 2011 |
| 8.5% |
June 5, 2011 - July 2, 2011 |
| 15% |
June 5, 2011 - July 2, 2011 |
| 8% |
May 8, 2011 - June 4, 2011 |
| 14% |
May 8, 2011 - June 4, 2011 |
| 13% |
April 3, 2011 - May 7, 2011 |
| 7.5% |
April 3, 2011 - May 7, 2011 |
| 11% |
March 6, 2011 - April 2, 2011 |
| 6.5% |
March 6, 2011 - April 2, 2011 |
| 10.5% |
February 6, 2011 - March 5, 2011 |
| 6% |
February 6, 2011 - March 5, 2011 |
| 10% |
January 1, 2011 - February 5, 2011 |
| 6% |
January 1, 2011 - February 5, 2011 |
| 9.5% |
December 5, 2010 - December 31, 2010 |
| 9.5% |
December 5, 2010 - December 31, 2010 |
| 5.5% |
November 7, 2010 - December 4, 2010 |
| 9.5% |
November 7, 2010 - December 4, 2010 |
| 9.5% |
October 3, 2010 - November 6, 2010 |
| 5.5% |
October 3, 2010 - November 6, 2010 |
| 9.5% |
September 5, 2010 - October 2, 2010 |
| 5.5% |
September 5, 2010 - October 2, 2010 |
| 9% |
August 8, 2010 - September 4, 2010 |
| 5.5% |
August 8, 2010 - September 4, 2010 |
| 9.5% |
July 4, 2010 - August 7, 2010 |
| 5.5% |
July 4, 2010 - August 7, 2010 |
| 10% |
June 6, 2010 - July 3, 2010 |
| 6% |
June 6, 2010 - July 3, 2010 |
| 9.5% |
May 9, 2010 - June 5, 2010 |
| 5.5% |
May 9, 2010 - June 5, 2010 |
| 8% |
April 4, 2010 - May 8, 2010 |
| 4.5% |
April 4, 2010 - May 8, 2010 |
| 4.5% |
March 7, 2010 - April 3, 2010 |
| 8.5% |
March 7, 2010 - April 3, 2010 |
| 8% |
February 6, 2010 - March 6, 2010 |
| 4.5% |
February 6, 2010 - March 6, 2010 |
| 4.5% |
January 1, 2010 - February 5, 2010 |
| 8.5% |
January 1, 2010 - February 5, 2010 |
| 4.5% |
September 27, 2009 - October 31, 2009 |
| 8% |
September 27, 2009 - October 31, 2009 |
| 7.5% |
August 30, 2009 - September 26, 2009 |
| 4% |
August 30, 2009 - September 26, 2009 |
| 8% |
August 2, 2009 - August 29, 2009 |
| 4.5% |
August 2, 2009 - August 29, 2009 |
| 7% |
June 28, 2009 - August 1, 2009 |
| 4% |
June 28, 2009 - August 1, 2009 |
| 6.5% |
May 31, 2009 - June 27, 2009 |
| 3.5% |
May 31, 2009 - June 27, 2009 |
| 5.5% |
May 3, 2009 - May 30, 2009 |
| 2.5% |
May 3, 2009 - May 30, 2009 |
| 2.5% |
March 29, 2009 - May 2, 2009 |
| 5% |
March 29, 2009 - May 2, 2009 |
| 5% |
March 1, 2009 - March 29, 2009 |
| 2.5% |
March 1, 2009 - March 29, 2009 |
| 2% |
February 1, 2009 - February 28, 2009 |
| 4% |
February 1, 2009 - February 28, 2009 |
| 7% |
January 1, 2009 - January 31, 2009 |
| 3.5% |
January 1, 2009 - January 31, 2009 |
| 8% |
December 1, 2008 - December 31, 2008 |
| 4% |
December 1, 2008 - December 31, 2008 |
| 10.5% |
November 3, 2008 - November 30, 2008 |
| 5% |
November 3, 2008 - November 30, 2008 |
| 12% |
September 29, 2008 - November 2, 2008 |
| 6% |
September 29, 2008 - November 2, 2008 |