| | Volume | Selling Days in Month | | Apr 2013 | 32,943 | 25 | | Mar 2013 | 36,701 | 27 | | Feb 2013 | 28,163 | 24 | | Jan 2013 | 27,663 | 25 | | Dec 2012 | 36,653 | 26 | | Nov 2012 | 28,206 | 25 | | Oct 2012 | 26,119 | 26 | | Sep 2012 | 27,683 | 25 | | Aug 2012 | 28,293 | 27 | | Jul 2012 | 25,183 | 24 | | Jun 2012 | 27,702 | 27 | | May 2012 | 29,724 | 26 | | Apr 2012 | 26,310 | 24 | | Mar 2012 | 32,387 | 28 | | Feb 2012 | 25,374 | 25 | | Jan 2012 | 22,807 | | | Dec 2011 | 33,701 | 27 | | Nov 2011 | 17,657 | 25 | | Oct 2011 | 20,081 | 26 | | Sep 2011 | 20,934 | 25 | | Aug 2011 | 20,837 | 26 | | Jul 2011 | 21,730 | 26 | | Jun 2011 | 19,794 | 26 | | May 2011 | 20,036 | 24 | | Apr 2011 | 24,762 | 27 | | Mar 2011 | 26,916 | 27 | | Feb 2011 | 21,683 | 24 | | Jan 2011 | 18,858 | | | Dec 2010 | 26,694 | 27 | | Nov 2010 | 20,792 | 24 | | Oct 2010 | 22,720 | 27 | | Sep 2010 | 21,432 | 25 | | Aug 2010 | 22,239 | 25 | | Jul 2010 | 23,983 | 27 | | Jun 2010 | 21,601 | 25 | | May 2010 | 23,667 | 26 | | Apr 2010 | 23,198 | 26 | | Mar 2010 | 23,785 | 26 | | Feb 2010 | 18,098 | 24 | | Jan 2010 | 15,611 | 24 | | Dec 2009 | 23,074 | 28 | | Nov 2009 | 16,988 | 23 | | Oct 2009 | 18,169 | 28 | | Sep 2009 | 14,593 | 25 | | Aug 2009 | 28,683 | 26 | | Jul 2009 | 21,839 | 26 | | Jun 2009 | 18,620 | 25 | | May 2009 | 17,505 | 26 | | Apr 2009 | 15,649 | 26 | | Mar 2009 | 16,249 | 25 | | Feb 2009 | 13,089 | 24 | | Jan 2009 | 12,194 | 26 | | Dec 2008 | 17,287 | 26 | | Nov 2008 | 13,706 | 25 | | Sep 2008 | 14,491 | 24 | | Aug 2008 | 18,932 | 27 | | Jul 2008 | 16,271 | 26 | | Jun 2008 | 18,007 | 24 | | May 2008 | 18,436 | 27 | | Apr 2008 | 16,771 | | | Feb 2008 | 12,907 | 25 | | Dec 2007 | 18,739 | 26 | | Nov 2007 | 14,868 | | | Oct 2007 | 14,979 | | | Sep 2007 | 16,457 | 25 | | Aug 2007 | 16,573 | | | Jul 2007 | 15,438 | 24 | | Jun 2007 | 17,108 | 27 | | May 2007 | 16,282 | 26 | | Apr 2007 | 13,786 | 24 | | Feb 2007 | 12,875 | 24 | | Jan 2007 | 12,074 | 25 | | Dec 2006 | 20,613 | 26 | | Nov 2006 | 15,800 | | | Sep 2006 | 16,128 | 26 | | Aug 2006 | 17,809 | 27 | | Jul 2006 | 18,923 | 25 | | Jun 2006 | 18,476 | 26 | | May 2006 | 16,406 | 25 | | Apr 2006 | 16,073 | 26 | | Feb 2006 | 13,635 | | | Jan 2006 | 12,384 | 24 | | Dec 2005 | 19,919 | | | Nov 2005 | 14,521 | | | Sep 2005 | 16,100 | 25 | | Aug 2005 | 17,426 | 26 | | Jul 2005 | 17,959 | 26 |
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