Quarter	Percent
1996-03-31	6.2103
1996-06-30	5.973
1996-09-30	5.7748
1996-12-31	6.2215
1997-03-31	6.2784
1997-06-30	6.5419
1997-09-30	7.1606
1997-12-31	7.4965
1998-03-31	7.495
1998-06-30	7.5206
1998-09-30	7.6092
1998-12-31	6.8322
1999-03-31	5.5242
1999-06-30	5.2254
1999-09-30	5.2241
1999-12-31	5.9104
2000-03-31	6.152
2000-06-30	6.2179
2000-09-30	6.1405
2000-12-31	6.0078
2001-03-31	5.6516
2001-06-30	5.2412
2001-09-30	4.9439
2001-12-31	4.1198
2002-03-31	4.031
2002-06-30	4.1177
2002-09-30	3.9551
2002-12-31	3.9351
2003-03-31	3.7396
2003-06-30	3.5789
2003-09-30	3.5096
2003-12-31	3.8732
2004-03-31	4.1013
2004-06-30	4.5305
2004-09-30	4.8576
2004-12-31	4.8238
2005-03-31	4.8557
2005-06-30	4.8233
2005-09-30	4.5523
2005-12-31	4.5616
2006-03-31	4.5345
2006-06-30	4.6494
2006-09-30	4.8594
2006-12-31	5.1737
2007-03-31	5.4968
2007-06-30	5.7279
2007-09-30	6.3041
2007-12-31	6.3052
2008-03-31	5.6814
2008-06-30	5.8463
2008-09-30	5.8002
2008-12-31	4.5475
2009-03-31	1.9698
2009-06-30	1.3187
2009-09-30	0.799
2009-12-31	0.608
2010-03-31	0.6221
2010-06-30	0.6821
2010-09-30	0.7485
2010-12-31	0.7315
2011-03-31	0.7919
2011-06-30	0.8293
2011-09-30	0.9423
2011-12-31	1.0313
2012-03-31	1.0898
2012-06-30	1.0122
2012-09-30	0.9827
2012-12-31	0.8707
2013-03-31	0.8615