Quarter	Percent
1998-01-01	4.84496813926169
1998-04-01	3.80237604040692
1998-07-01	3.74674699654201
1998-10-01	3.91417286410704
1999-01-01	4.03366118666335
1999-04-01	4.17536534446764
1999-07-01	3.84466019417476
1999-10-01	3.72280305170952
2000-01-01	3.76498632826194
2000-04-01	3.03976973568746
2000-07-01	3.14821242624089
2000-10-01	2.90558579799591
2001-01-01	3.08744301699130
2001-04-01	2.89049279966847
2001-07-01	3.29244895162396
2001-10-01	3.34463044743419
2002-01-01	3.67717287488061
2002-04-01	3.81107935211651
2002-07-01	4.11772693326091
2002-10-01	4.87396107671786
2003-01-01	5.50263825121634
2003-04-01	5.16129032258064
2003-07-01	5.47365547365547
2003-10-01	5.62335486958603
2004-01-01	5.45123125601871
2004-04-01	5.57467309015829
2004-07-01	5.91051562015637
2004-10-01	6.26916055251283
2005-01-01	6.50603242645280
2005-04-01	6.45317137138519
2005-07-01	6.69102692267917
2005-10-01	6.96154639884433
2006-01-01	6.53421785309181
2006-04-01	6.37926311464183
2006-07-01	6.21980055515575
2006-10-01	6.99653433071406
2007-01-01	7.09268459825253
2007-04-01	6.47988999656239
2007-07-01	6.58150893131596
2007-10-01	6.22662870081306
2008-01-01	6.42754466424807
2008-04-01	6.25663504674497
2008-07-01	6.44318377170363
2008-10-01	6.76991911891241
2009-01-01	8.09477487493052
2009-04-01	8.62386596683931
2009-07-01	9.10175857348450
2009-10-01	9.49795046070840
2010-01-01	9.79084465239708
2010-04-01	9.64071856287425
2010-07-01	9.56638040264677
2010-10-01	10.02390830461990
2011-01-01	11.94087493855770
2011-04-01	11.77153307776180
2011-07-01	11.93185809624170
2011-10-01	13.74759906096610
2012-01-01	14.59461397783910
2012-04-01	14.95133863320380
2012-07-01	15.95945224968880
2012-10-01	16.72100268057670
2013-01-01	17.69205431321600
2013-04-01	16.31762332660920
2013-07-01	15.22933763188750
2013-10-01	14.79281207335520
2014-01-01	15.05380361679870
2014-04-01	13.48543869411980
2014-07-01	12.26316962627240
2014-10-01	13.13712223725760
2015-01-01	13.09717134332870
2015-04-01	12.01069961948540
2015-07-01	11.50339110776190
2015-10-01	12.01227039766560
2016-01-01	12.39971101562800
2016-04-01	10.75755860038500
2016-07-01	10.34843335698550
2016-10-01	10.39318430278580
2017-01-01	9.76696755674737
2017-04-01	8.40298339642442
2017-07-01	7.73451789913771
2017-10-01	7.73031857148205
2018-01-01	7.64460480324726
2018-04-01	6.39083578265129