Quarter	Percent
1996-03-31	6.0043
1996-06-30	5.8874
1996-09-30	5.7285
1996-12-31	5.8513
1997-03-31	5.9333
1997-06-30	6.1146
1997-09-30	6.7866
1997-12-31	7.0872
1998-03-31	7.1984
1998-06-30	7.1821
1998-09-30	7.3106
1998-12-31	6.7214
1999-03-31	5.55
1999-06-30	5.0384
1999-09-30	4.8907
1999-12-31	5.1329
2000-03-31	5.696
2000-06-30	5.841
2000-09-30	5.8515
2000-12-31	5.8245
2001-03-31	5.6513
2001-06-30	5.1325
2001-09-30	4.9029
2001-12-31	4.1396
2002-03-31	3.8832
2002-06-30	3.7548
2002-09-30	3.7868
2002-12-31	3.8703
2003-03-31	3.6732
2003-06-30	3.5652
2003-09-30	3.3798
2003-12-31	3.5665
2004-03-31	3.8345
2004-06-30	4.1372
2004-09-30	4.6075
2004-12-31	4.7149
2005-03-31	4.7114
2005-06-30	4.7278
2005-09-30	4.5635
2005-12-31	4.4825
2006-03-31	4.4537
2006-06-30	4.4939
2006-09-30	4.6648
2006-12-31	4.9488
2007-03-31	5.2341
2007-06-30	5.418
2007-09-30	5.8118
2007-12-31	5.7026
2008-03-31	5.3515
2008-06-30	5.0734
2008-09-30	5.0241
2008-12-31	3.0988
2009-03-31	1.0178
2009-06-30	0.509
2009-09-30	0.4432
2009-12-31	0.4604
2010-03-31	0.499
2010-06-30	0.4938
2010-09-30	0.5257
2010-12-31	0.5406
2011-03-31	0.5148
2011-06-30	0.529
2011-09-30	0.5233
2011-12-31	0.4755
2012-03-31	0.4659
2012-06-30	0.4572
2012-09-30	0.4558
2012-12-31	0.433
2013-03-31	0.4432
2013-06-30	0.4527
2013-09-30	0.4435
2013-12-31	0.4234
2014-03-31	0.4278
2014-06-30	0.4262
2014-09-30	0.4587
2014-12-31	0.4688
2015-03-31	0.483
2015-06-30	0.5041
2015-09-30	0.5115
2015-12-31	0.5123
2016-03-31	0.5279
2016-06-30	0.5175
2016-09-30	0.3475
2016-12-31	0.2546
2017-03-31	0.2405
2017-06-30	0.2345
2017-09-30	0.2205
2017-12-31	0.3831
2018-03-31	0.4649
2018-06-30	0.4791