Quarter	Net Percent, Seasonally Adjusted
2000-01-01	22.26
2000-04-01	17.64
2000-07-01	1.03
2000-10-01	-34.41
2001-01-01	40.23
2001-04-01	26.58
2001-07-01	4.73
2001-10-01	-31.28
2002-01-01	39.21
2002-04-01	25.06
2002-07-01	5.17
2002-10-01	-31.71
2003-01-01	47.85
2003-04-01	33.97
2003-07-01	8.61
2003-10-01	-25.34
2004-01-01	59.23
2004-04-01	33.73
2004-07-01	13.76
2004-10-01	-22.58
2005-01-01	55.42
2005-04-01	35.41
2005-07-01	18.87
2005-10-01	-22.25
2006-01-01	53.21
2006-04-01	39.23
2006-07-01	19.73
2006-10-01	-17.35
2007-01-01	61.30
2007-04-01	39.89
2007-07-01	26.54
2007-10-01	-15.01
2008-01-01	61.43
2008-04-01	42.00
2008-07-01	21.54
2008-10-01	-26.51
2009-01-01	43.70
2009-04-01	35.27
2009-07-01	16.65
2009-10-01	2.95
2010-01-01	58.33
2010-04-01	44.89
2010-07-01	23.18
2010-10-01	-6.56
2011-01-01	62.76
2011-04-01	42.79
2011-07-01	15.37
2011-10-01	-18.73