Quarter	Percent
1999-04-01	4.37305979214469
2000-01-01	6.74896015027506
2000-04-01	5.14854147062777
2000-07-01	5.82329317269076
2000-10-01	6.00133958472874
2001-01-01	5.88712951684937
2001-04-01	5.84652862362972
2001-07-01	5.25178884838666
2001-10-01	4.74837662337662
2002-01-01	4.47154471544715
2002-04-01	3.76795879642179
2002-07-01	4.99457111834962
2002-10-01	4.46950142643663
2003-01-01	4.25153793574846
2003-04-01	4.63304633046330
2003-07-01	4.44686945846406
2003-10-01	4.49330783938815
2004-01-01	4.19186366135239
2004-04-01	4.03568977350721
2004-07-01	4.19128761852412
2004-10-01	4.19186366135239
2005-01-01	3.50344827586207
2005-04-01	2.85872117110896
2005-07-01	3.30806340454859
2005-10-01	3.07204849152776
2006-01-01	2.55201109570042
2006-04-01	3.01598332175122
2006-07-01	2.68772513161541
2006-10-01	2.31045932484781
2007-01-01	1.71572046310504
2007-04-01	1.98102678571429
2007-07-01	1.63020760763550
2007-10-01	1.69916434540390
2008-01-01	2.18120805369128
2008-04-01	1.63385002094680
2008-07-01	2.65214963707426
2008-10-01	3.26906957250629
2009-01-01	4.17425409721249
2009-04-01	4.54163162321278
2009-07-01	5.56490047659097
2009-10-01	5.19316909294513
2010-01-01	6.79298245614035
2010-04-01	6.91011235955056
2010-07-01	7.00619020821609
2010-10-01	6.07680405120270
2011-01-01	6.19181946403385
2011-04-01	5.81690140845070
2011-07-01	5.31135531135531
2011-10-01	4.86600846262341
2012-01-01	4.77337110481586
2012-04-01	4.11947904869762
2012-07-01	4.57312756619000
2012-10-01	3.86302532899392
2013-01-01	4.26499857833381
2013-04-01	3.81060713777904
2013-07-01	3.60142348754448
2013-10-01	3.81223328591750
2014-01-01	3.49800114220445
2014-04-01	2.89793004996431
2014-07-01	3.25714285714286