Month	Percent
2009-09-30	-11.8
2009-10-31	-9.7
2009-11-30	-9.1
2009-12-31	-10.3
2010-01-31	-12.8
2010-02-28	-9
2010-03-31	-9.3
2010-04-30	-3.9
2010-05-31	-8.8
2010-06-30	-4.5
2010-07-31	-7.8
2010-08-31	-10.1
2010-09-30	-9
2010-10-31	-9.8
2010-11-30	-8.9
2010-12-31	-9.9
2011-01-31	-3.7
2011-02-28	-1.3
2011-03-31	-1.5
2011-04-30	-4.3
2011-05-31	-9.4
2011-06-30	-11.2
2011-07-31	-8.6
2011-08-31	-3.6
2011-09-30	4.1
2011-10-31	2.3
2011-11-30	3.1
2011-12-31	-5.1
2012-01-31	-6.3
2012-02-29	-10
2012-03-31	-5.3
2012-04-30	-10.5
2012-05-31	-9.6
2012-06-30	-10.1
2012-07-31	-3.1
2012-08-31	-2.9
2012-09-30	1.4
2012-10-31	-1.7
2012-11-30	-3.6
2012-12-31	-14.4
2013-01-31	-10.7
2013-02-28	-8.4