Quarter	Percent
1998-01-01	49.5963227061111
1998-04-01	50.2138512850696
1998-07-01	50.5731360830802
1998-10-01	50.0919765166340
1999-01-01	49.7634686058331
1999-04-01	49.8759983596633
1999-07-01	49.8419697206181
1999-10-01	49.3947958288666
2000-01-01	49.6036923795984
2000-04-01	50.1722560678903
2000-07-01	50.3793183940243
2000-10-01	50.1137269387041
2001-01-01	49.8407613304438
2001-04-01	50.1356698699830
2001-07-01	50.1309319718920
2001-10-01	49.5687219857622
2002-01-01	49.4861079737972
2002-04-01	50.4261283464715
2002-07-01	50.5800507661935
2002-10-01	50.3861548001578
2003-01-01	50.5501520898269
2003-04-01	50.8976980657749
2003-07-01	51.0704109178164
2003-10-01	50.7061247424611
2004-01-01	50.2236529355618
2004-04-01	50.9285754362341
2004-07-01	50.9045376392315
2004-10-01	50.7087231777691
2005-01-01	50.6867209076659
2005-04-01	51.1375079252601
2005-07-01	51.0378237376561
2005-10-01	50.9429746988625
2006-01-01	51.0772093023256
2006-04-01	51.3759250306794
2006-07-01	51.6082876521416
2006-10-01	51.3221912720520
2007-01-01	51.1236059307094
2007-04-01	51.5000370837351
2007-07-01	51.7739036997240
2007-10-01	51.5002869148326
2008-01-01	51.3367994523285
2008-04-01	51.8565798967642
2008-07-01	51.7999852005328
2008-10-01	51.2263697236506
2009-01-01	50.4079329546926
2009-04-01	50.6866809802325
2009-07-01	50.6962447226131
2009-10-01	49.8008558566903
2010-01-01	49.0885827136685
2010-04-01	48.7221396731055
2010-07-01	48.3890170399583
2010-10-01	47.1521994298809
2011-01-01	45.8441340469575
2011-04-01	45.4465751380391
2011-07-01	44.4939920889619
2011-10-01	42.5828123542036
2012-01-01	41.5642395486980
2012-04-01	40.9266120279930
2012-07-01	40.3872467245225
2012-10-01	39.5415203800011
2013-01-01	38.6341848530987
2013-04-01	39.0613243039880
2013-07-01	39.1897742888876
2013-10-01	38.5728279707633
2014-01-01	38.3678394991892
2014-04-01	38.9311536065543
2014-07-01	39.3785908678561