| | Volume | Selling Days in Month | | Apr 2013 | 23,225 | 25 | | Mar 2013 | 27,078 | 27 | | Feb 2013 | 21,311 | 24 | | Jan 2013 | 16,513 | 25 | | Dec 2012 | 37,399 | 26 | | Nov 2012 | 31,213 | 25 | | Oct 2012 | 26,451 | 26 | | Sep 2012 | 21,761 | 25 | | Aug 2012 | 16,835 | 27 | | Jul 2012 | 21,297 | 24 | | Jun 2012 | 21,725 | 27 | | May 2012 | 22,168 | 26 | | Apr 2012 | 21,062 | 24 | | Mar 2012 | 23,940 | 28 | | Feb 2012 | 21,204 | 25 | | Jan 2012 | 16,405 | | | Nov 2011 | 21,521 | 25 | | Oct 2011 | 21,873 | 26 | | Sep 2011 | 21,750 | 25 | | Aug 2011 | 20,815 | 26 | | Jul 2011 | 21,409 | 26 | | Jun 2011 | 21,637 | 26 | | May 2011 | 20,651 | 24 | | Apr 2011 | 18,801 | 27 | | Mar 2011 | 20,295 | 27 | | Feb 2011 | 16,416 | 24 | | Jan 2011 | 15,905 | | | Dec 2010 | 23,280 | 27 | | Nov 2010 | 20,097 | 24 | | Oct 2010 | 19,272 | 27 | | Sep 2010 | 18,228 | 25 | | Aug 2010 | 19,540 | 25 | | Jul 2010 | 19,064 | 27 | | Jun 2010 | 19,182 | 25 | | May 2010 | 17,859 | 26 | | Apr 2010 | 17,268 | 26 | | Mar 2010 | 18,060 | 26 | | Feb 2010 | 15,100 | 24 | | Jan 2010 | 13,163 | 24 | | Dec 2009 | 20,128 | 28 | | Nov 2009 | 15,708 | 23 | | Oct 2009 | 16,443 | 28 | | Sep 2009 | 15,047 | 25 | | Aug 2009 | 19,232 | 26 | | Jul 2009 | 16,381 | 26 | | Jun 2009 | 16,744 | 25 | | May 2009 | 18,383 | 26 | | Apr 2009 | 15,705 | 26 | | Mar 2009 | 17,520 | 25 | | Feb 2009 | 12,979 | 24 | | Jan 2009 | 12,232 | 26 | | Dec 2008 | 18,060 | 26 | | Nov 2008 | 15,217 | 25 | | Oct 2008 | 20,203 | 27 | | Sep 2008 | 14,744 | 24 | | Aug 2008 | 25,462 | 27 | | Jul 2008 | 23,914 | 26 | | Jun 2008 | 20,944 | 24 | | May 2008 | 25,469 | 27 | | Apr 2008 | 26,735 | | | Mar 2008 | 23,115 | 26 | | Feb 2008 | 20,775 | 25 | | Dec 2007 | 30,199 | 26 | | Nov 2007 | 23,808 | | | Oct 2007 | 23,451 | | | Sep 2007 | 20,901 | 25 | | Aug 2007 | 26,562 | | | Jul 2007 | 24,295 | 24 | | Jun 2007 | 25,220 | 27 | | May 2007 | 26,689 | 26 | | Apr 2007 | 25,310 | 24 | | Mar 2007 | 25,325 | 28 | | Feb 2007 | 22,274 | 24 | | Jan 2007 | 19,761 | 25 | | Dec 2006 | 30,945 | 26 | | Nov 2006 | 22,602 | | | Oct 2006 | 20,822 | 25 | | Sep 2006 | 20,339 | 26 | | Aug 2006 | 22,421 | 27 | | Jul 2006 | 20,083 | 25 | | Jun 2006 | 24,179 | 26 | | May 2006 | 24,688 | 25 | | Apr 2006 | 25,250 | 26 | | Mar 2006 | 24,501 | 27 | | Feb 2006 | 19,328 | | | Jan 2006 | 19,274 | 24 | | Dec 2005 | 24,464 | | | Nov 2005 | 23,673 | | | Oct 2005 | 22,432 | | | Sep 2005 | 22,052 | 25 | | Aug 2005 | 25,537 | 26 | | Jul 2005 | 23,178 | 26 |
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