Quarter	Percent
1996-01-01	12.46
1996-04-01	18.55
1996-07-01	12.46
1996-10-01	13.70
1997-01-01	16.76
1997-04-01	9.71
1997-07-01	12.56
1997-10-01	12.13
1998-01-01	9.75
1998-04-01	17.89
1998-07-01	30.79
1998-10-01	11.99
1999-01-01	6.84
1999-04-01	7.71
1999-07-01	7.22
1999-10-01	7.92
2000-01-01	11.64
2000-04-01	9.14
2000-07-01	8.21
2000-10-01	9.69
2001-01-01	2.57
2001-04-01	8.96
2001-07-01	6.50
2001-10-01	6.62
2002-01-01	5.03
2002-04-01	3.99
2002-07-01	3.00
2002-10-01	3.03
2003-01-01	2.67
2003-04-01	2.73
2003-07-01	2.74
2003-10-01	2.45
2004-01-01	1.72
2004-04-01	1.76
2004-07-01	1.94
2004-10-01	2.37
2005-01-01	2.82
2005-04-01	3.27
2005-07-01	3.98
2005-10-01	4.53
2006-01-01	4.67
2006-04-01	5.03
2006-07-01	5.32
2006-10-01	5.36
2007-01-01	5.05
2007-04-01	5.10
2007-07-01	5.72
2007-10-01	5.93
2008-01-01	6.27
2008-04-01	6.59
2008-07-01	8.17
2008-10-01	8.24
2009-01-01	3.24
2009-04-01	1.01
2009-07-01	0.45
2009-10-01	0.45
2010-01-01	0.43
2010-04-01	0.68
2010-07-01	2.24
2010-10-01	3.13
2011-01-01	3.73
2011-04-01	5.12
2011-07-01	5.24
2011-10-01	5.23
2012-01-01	5.00
2012-04-01	5.02
2012-07-01	5.02
2012-10-01	4.99
2013-01-01	5.00
2013-04-01	5.00
2013-07-01	5.00
2013-10-01	4.50
2014-01-01	4.11
2014-04-01	4.00
2014-07-01	3.35
2014-10-01	3.00
2015-01-01	3.00
2015-04-01	3.00
2015-07-01	3.00
2015-10-01	3.35
2016-01-01	3.50
2016-04-01	3.50
2016-07-01	3.50
2016-10-01	3.48
2017-01-01	3.14
2017-04-01	2.50
2017-07-01	2.50
2017-10-01	2.50
2018-01-01	2.50
2018-04-01	2.50
2018-07-01	2.50