Quarter	Percent
1999-04-01	2.20779220779221
2000-04-01	1.94113963681904
2001-04-01	2.17256362507759
2002-04-01	3.28784119106700
2003-01-01	3.83386581469649
2003-04-01	4.02439024390244
2003-07-01	2.61239368165249
2003-10-01	2.87907869481766
2004-01-01	3.07692307692308
2004-04-01	4.05156537753223
2004-07-01	2.42386575512741
2004-10-01	2.39144115796098
2005-01-01	2.94855708908406
2005-04-01	2.92712066905615
2005-07-01	1.69799878714372
2005-10-01	2.61557177615572
2006-01-01	2.28640192539110
2006-04-01	4.01356698699830
2006-07-01	2.50712250712251
2006-10-01	2.49564712710389
2007-01-01	1.88895248998283
2007-04-01	3.17286652078775
2007-07-01	1.97802197802198
2007-10-01	1.90156599552573
2008-01-01	2.20463538722442
2008-04-01	3.01399354144241
2008-07-01	2.52824098977945
2008-10-01	4.03092214246273
2009-01-01	7.07013574660634
2009-04-01	9.09589041095890
2009-07-01	5.99666851749028
2009-10-01	6.71178793006204
2010-01-01	7.54395916052184
2010-04-01	8.76906318082789
2010-07-01	6.47321428571428
2010-10-01	7.40740740740741
2011-01-01	7.78923253150057
2011-04-01	8.46446011937059
2011-07-01	5.87909040488076
2011-10-01	6.00000000000000
2012-01-01	6.91428571428572
2012-04-01	7.24400871459695
2012-07-01	5.00556173526140
2012-10-01	4.77001703577513
2013-01-01	5.82579185520362
2013-04-01	6.86695278969957
2013-07-01	4.34316353887400
2013-10-01	4.48823207443897
2014-01-01	5.72057205720572
2014-04-01	5.84826132771338
2014-07-01	3.94529195160442
2014-10-01	4.04749055585537
2015-01-01	4.22459893048128
2015-04-01	5.04330106979114
2015-07-01	3.47871235721703
2015-10-01	3.12004230565838
2016-01-01	3.20546505517604
2016-04-01	3.56425702811245
2016-07-01	2.55767301905717
2016-10-01	2.54712175241977
2017-01-01	2.79329608938547
2017-04-01	3.40909090909091
2017-07-01	2.16624685138539
2017-10-01	2.60651629072682
2018-01-01	2.84715284715285
2018-04-01	3.41463414634146