| | Volume | Selling Days in Month | | Apr 2013 | 204,969 | 25 | | Mar 2013 | 229,335 | 27 | | Feb 2013 | 190,939 | 24 | | Jan 2013 | 162,310 | 25 | | Dec 2012 | 206,838 | 26 | | Nov 2012 | 171,941 | 25 | | Oct 2012 | 163,302 | 26 | | Sep 2012 | 168,174 | 25 | | Aug 2012 | 189,108 | 27 | | Jul 2012 | 166,991 | 24 | | Jun 2012 | 200,215 | 27 | | May 2012 | 208,993 | 26 | | Apr 2012 | 174,042 | 24 | | Mar 2012 | 214,615 | 28 | | Feb 2012 | 172,207 | 25 | | Jan 2012 | 131,589 | | | Dec 2011 | 201,737 | 27 | | Nov 2011 | 160,560 | 25 | | Oct 2011 | 161,709 | 26 | | Sep 2011 | 168,181 | 25 | | Aug 2011 | 167,214 | 26 | | Jul 2011 | 173,051 | 26 | | Jun 2011 | 186,753 | 26 | | May 2011 | 184,703 | 24 | | Apr 2011 | 182,542 | 27 | | Mar 2011 | 204,276 | 27 | | Feb 2011 | 150,678 | 24 | | Jan 2011 | 121,511 | | | Dec 2010 | 174,523 | 27 | | Nov 2010 | 133,544 | 24 | | Oct 2010 | 143,624 | 27 | | Sep 2010 | 147,057 | 25 | | Aug 2010 | 144,035 | 25 | | Jul 2010 | 153,603 | 27 | | Jun 2010 | 155,332 | 25 | | May 2010 | 175,370 | 26 | | Apr 2010 | 146,589 | 26 | | Mar 2010 | 159,367 | 26 | | Feb 2010 | 123,507 | 24 | | Jan 2010 | 99,888 | 24 | | Dec 2009 | 159,169 | 28 | | Nov 2009 | 105,133 | 23 | | Oct 2009 | 119,072 | 28 | | Sep 2009 | 98,516 | 25 | | Aug 2009 | 161,369 | 26 | | Jul 2009 | 142,135 | 26 | | Jun 2009 | 133,684 | 25 | | May 2009 | 137,167 | 26 | | Apr 2009 | 116,263 | 26 | | Mar 2009 | 109,490 | 25 | | Feb 2009 | 84,422 | 24 | | Jan 2009 | 79,322 | 26 | | Dec 2008 | 116,188 | 26 | | Nov 2008 | 103,055 | 25 | | Oct 2008 | 114,969 | 27 | | Sep 2008 | 102,685 | 24 | | Aug 2008 | 133,088 | 27 | | Jul 2008 | 138,175 | 26 | | Jun 2008 | 145,715 | 24 | | May 2008 | 184,402 | 27 | | Apr 2008 | 165,997 | | | Mar 2008 | 187,828 | 26 | | Feb 2008 | 164,915 | 25 | | Jan 2008 | 131,074 | 25 | | Dec 2007 | 173,648 | 26 | | Nov 2007 | 147,310 | | | Oct 2007 | 159,361 | | | Sep 2007 | 155,037 | 25 | | Aug 2007 | 180,282 | | | Jul 2007 | 160,590 | 24 | | Jun 2007 | 204,303 | 27 | | May 2007 | 212,572 | 26 | | Apr 2007 | 185,553 | 24 | | Mar 2007 | 216,788 | 28 | | Feb 2007 | 173,794 | 24 | | Jan 2007 | 132,006 | 25 | | Dec 2006 | 190,914 | 26 | | Nov 2006 | 147,791 | | | Oct 2006 | 183,188 | 25 | | Sep 2006 | 204,070 | 26 | | Aug 2006 | 214,759 | 27 | | Jul 2006 | 199,735 | 25 | | Jun 2006 | 226,250 | 26 | | May 2006 | 234,655 | 25 | | Apr 2006 | 215,824 | 26 | | Mar 2006 | 241,642 | 27 | | Feb 2006 | 204,846 | | | Jan 2006 | 169,412 | 24 | | Dec 2005 | 223,324 | | | Nov 2005 | 168,386 | | | Oct 2005 | 166,266 | | | Sep 2005 | 190,012 | 25 | | Aug 2005 | 242,849 | 26 | | Jul 2005 | 310,757 | 26 |
| 2013
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