| | Volume | Selling Days
in Month | | Apr 2013 | 39,426 | 25 | | Mar 2013 | 39,469 | 27 | | Feb 2013 | 31,164 | 24 | | Jan 2013 | 30,318 | 25 | | Dec 2012 | 39,871 | 26 | | Nov 2012 | 35,047 | 25 | | Oct 2012 | 34,023 | 26 | | Sep 2012 | 39,245 | 25 | | Aug 2012 | 42,839 | 27 | | Jul 2012 | 41,559 | 24 | | Jun 2012 | 44,519 | 27 | | May 2012 | 44,198 | 26 | | Apr 2012 | 38,684 | 24 | | Mar 2012 | 45,124 | 28 | | Feb 2012 | 37,312 | 25 | | Jan 2012 | 31,710 | | | Dec 2011 | 43,577 | 27 | | Nov 2011 | 36,246 | 25 | | Oct 2011 | 35,733 | 26 | | Sep 2011 | 35,565 | 25 | | Aug 2011 | 40,613 | 26 | | Jul 2011 | 38,691 | 26 | | Jun 2011 | 36,114 | 26 | | May 2011 | 35,573 | 24 | | Apr 2011 | 32,384 | 27 | | Mar 2011 | 33,155 | 27 | | Feb 2011 | 28,619 | 24 | | Jan 2011 | 23,079 | | | Dec 2010 | 30,910 | 27 | | Nov 2010 | 24,202 | 24 | | Oct 2010 | 28,480 | 27 | | Sep 2010 | 28,603 | 25 | | Aug 2010 | 25,706 | 25 | | Jul 2010 | 26,466 | 27 | | Jun 2010 | 20,731 | 25 | | May 2010 | 22,948 | 26 | | Apr 2010 | 19,645 | 26 | | Mar 2010 | 24,393 | 26 | | Feb 2010 | 23,339 | 24 | | Jan 2010 | 15,715 | 24 | | Dec 2009 | 20,810 | 28 | | Nov 2009 | 15,339 | 23 | | Oct 2009 | 13,500 | 28 | | Sep 2009 | 17,287 | 25 | | Aug 2009 | 22,041 | 26 | | Jul 2009 | 22,276 | 26 | | Jun 2009 | 16,608 | 25 | | May 2009 | 21,624 | 26 | | Apr 2009 | 19,670 | 26 | | Mar 2009 | 23,771 | 25 | | Feb 2009 | 21,941 | 24 | | Jan 2009 | 16,834 | 26 | | Dec 2008 | 23,091 | 26 | | Nov 2008 | 20,302 | 25 | | Oct 2008 | 21,360 | 27 | | Sep 2008 | 21,431 | 24 | | Aug 2008 | 23,476 | 27 | | Jul 2008 | 22,705 | 26 | | Jun 2008 | 26,642 | 24 | | Apr 2008 | 33,733 | | | Mar 2008 | 39,941 | 26 | | Feb 2008 | 32,243 | 25 | | Jan 2008 | 33,136 | 25 | | Dec 2007 | 44,804 | 26 | | Nov 2007 | 34,908 | | | Oct 2007 | 31,856 | | | Sep 2007 | 37,460 | 25 | | Aug 2007 | 41,712 | | | Jul 2007 | 37,355 | 24 | | Jun 2007 | 44,600 | 27 | | May 2007 | 42,870 | 26 | | Apr 2007 | 41,200 | 24 | | Mar 2007 | 45,335 | 28 | | Feb 2007 | 37,776 | 24 | | Jan 2007 | 35,361 | 25 | | Dec 2006 | 46,087 | 26 | | Nov 2006 | 35,785 | | | Oct 2006 | 40,297 | 25 | | Sep 2006 | 41,893 | 26 | | Aug 2006 | 42,243 | 27 | | Jul 2006 | 35,831 | 25 | | Jun 2006 | 37,475 | 26 | | May 2006 | 35,605 | 25 | | Apr 2006 | 31,885 | 26 | | Mar 2006 | 43,560 | 27 | | Feb 2006 | 39,618 | | | Jan 2006 | 29,773 | 24 | | Dec 2005 | 53,218 | | | Nov 2005 | 29,855 | | | Oct 2005 | 32,431 | | | Sep 2005 | 33,120 | 25 | | Aug 2005 | 40,659 | 26 | | Jul 2005 | 56,280 | 26 |
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