Quarter	Percent
1998-01-01	39.1524305300975
1999-01-01	39.4176795040758
1999-04-01	39.0957252020214
1999-07-01	39.4883800326774
1999-10-01	39.0750261945954
2000-01-01	39.5253642610009
2000-04-01	39.2076602587530
2000-07-01	39.5390200521404
2000-10-01	39.6121141242112
2001-01-01	39.7610298591001
2001-04-01	40.1893266493077
2001-07-01	40.0019468035919
2001-10-01	40.3499379456355
2002-01-01	40.6196424197894
2002-04-01	40.8395545220903
2002-07-01	40.9724600107616
2002-10-01	40.8443478048423
2003-01-01	40.9129558098292
2003-04-01	41.3877689804245
2003-07-01	41.6771844660194
2003-10-01	41.0170066379185
2004-01-01	39.9503423006460
2004-04-01	40.4169988644874
2004-07-01	41.1168737184899
2004-10-01	40.7978044729050
2005-01-01	41.2660660660661
2005-04-01	41.2487697145738
2005-07-01	41.9819690212439
2005-10-01	41.3831874073011
2006-01-01	41.7305533662917
2006-04-01	42.1861575178998
2006-07-01	43.3517047216854
2006-10-01	42.6685727900882
2007-01-01	42.7296100557063
2007-04-01	43.1269475036274
2007-07-01	43.9211677443895
2007-10-01	43.2495311350094
2008-01-01	43.7274625166066
2008-04-01	44.2645490103117
2008-07-01	44.6503910879355
2008-10-01	44.4586560553305
2009-01-01	44.5530957736474
2009-04-01	44.8726446359246
2009-07-01	45.0894547519879
2009-10-01	44.5620834711916
2010-01-01	44.5381924749480
2010-04-01	44.4187254948273
2010-07-01	45.3566621803499
2010-10-01	45.0301772915881
2011-01-01	44.7793909682285
2011-04-01	44.9387947269303
2011-07-01	45.6512016571334
2011-10-01	44.9975334163358
2012-01-01	45.1993987505284
2012-04-01	45.5667973426606
2012-07-01	46.0318577427452
2012-10-01	45.5347531008659
2013-01-01	45.1333021515435
2013-04-01	45.7062478021334
2013-07-01	46.2522252412630
2013-10-01	45.5709213231172
2014-01-01	45.4800084027729
2014-04-01	46.2493882972526
2014-07-01	46.3137072376076