Month	Percent
2004-01-31	4.18
2004-02-29	4.3
2004-03-31	4.34
2004-04-30	4.38
2004-05-31	4.48
2004-06-30	4.63
2004-07-31	4.75
2004-08-31	4.94
2004-09-30	5.07
2004-10-31	5.01
2004-11-30	5.07
2004-12-31	5.05
2005-01-31	5.02
2005-02-28	5.03
2005-03-31	5.03
2005-04-30	5.07
2005-05-31	5.07
2005-06-30	5.03
2005-07-31	5
2005-08-31	4.91
2005-09-30	4.87
2005-10-31	4.8
2005-11-30	4.77
2005-12-31	4.75
2006-01-31	4.77
2006-02-28	4.74
2006-03-31	4.73
2006-04-30	4.66
2006-05-31	4.76
2006-06-30	4.71
2006-07-31	4.75
2006-08-31	4.8
2006-09-30	4.84
2006-10-31	4.9
2006-11-30	4.96
2006-12-31	5.04
2007-01-31	5.11
2007-02-28	5.21
2007-03-31	5.26
2007-04-30	5.29
2007-05-31	5.35
2007-06-30	5.44
2007-07-31	5.57
2007-08-31	5.64
2007-09-30	5.73
2007-10-31	5.84
2007-11-30	5.87
2007-12-31	5.72
2008-01-31	5.64
2008-02-29	5.57
2008-03-31	5.47
2008-04-30	5.51
2008-05-31	5.4
2008-06-30	5.48
2008-07-31	5.51
2008-08-31	5.34
2008-09-30	5.61
2008-10-31	5.46
2008-11-30	5.35
2008-12-31	4.63
2009-01-31	3.21
2009-02-28	2.67
2009-03-31	2.3
2009-04-30	1.9
2009-05-31	1.58
2009-06-30	1.65
2009-07-31	1.41
2009-08-31	1.31
2009-09-30	1.39
2009-10-31	1.26
2009-11-30	1.25
2009-12-31	1.19