Month	Percent
2009-09-30	15
2009-10-31	-5.8
2009-11-30	17.1
2009-12-31	-0.1
2010-01-31	24.9
2010-02-28	-4.5
2010-03-31	-9.9
2010-04-30	-30.8
2010-05-31	1.6
2010-06-30	11.6
2010-07-31	39.6
2010-08-31	8.9
2010-09-30	14
2010-10-31	39.5
2010-11-30	7.6
2010-12-31	8.5
2011-01-31	-13.1
2011-02-28	4.5
2011-03-31	-25.2
2011-04-30	3.7
2011-05-31	12.2
2011-06-30	63.6
2011-07-31	50.5
2011-08-31	18.8
2011-09-30	8.4
2011-10-31	-7.6
2011-11-30	-0.5
2011-12-31	-27.5
2012-01-31	-14.7
2012-02-29	-21.1
2012-03-31	-13.5
2012-04-30	-1.2
2012-05-31	83.9
2012-06-30	91.5
2012-07-31	33.6
2012-08-31	-21.2
2012-09-30	-19.4
2012-10-31	-25.8
2012-11-30	-6.4
2012-12-31	13
2013-01-31	35.2
2013-02-28	55.2