Quarterly Percent
1999-01-01 16.83233275659860
1999-04-01 15.47525484847780
1999-07-01 15.28002829951850
1999-10-01 15.23424219759300
2000-01-01 14.84195467039160
2000-04-01 13.78524764085100
2000-07-01 13.59889807162530
2000-10-01 13.45240576022460
2001-01-01 10.93503533678000
2001-04-01 10.34803896965740
2001-07-01 10.29096815041150
2001-10-01 10.62454897329920
2002-01-01 11.55191843305610
2002-04-01 11.14614577481960
2002-07-01 11.48725353254760
2002-10-01 11.61100707449020
2003-01-01 11.98947541861470
2003-04-01 11.28355533830300
2003-07-01 11.29766003971150
2003-10-01 11.37283309187190
2004-01-01 11.50298804780880
2004-04-01 11.09022278143730
2004-07-01 10.73654515371740
2004-10-01 10.53286045375150
2005-01-01 10.17049104874050
2005-04-01 9.31911006781923
2005-07-01 8.41051420379522
2005-10-01 8.70539788015630
2006-01-01 9.02733570927407
2006-04-01 8.44333977722544
2006-07-01 8.08361317241442
2006-10-01 8.26444028562603
2007-01-01 8.41903591374916
2007-04-01 7.93232561364582
2007-07-01 8.00634763027713
2007-10-01 8.57020551723529
2008-01-01 9.60307578999053
2008-04-01 10.35792745934020
2008-07-01 11.23068087109350
2008-10-01 13.78551377562640
2009-01-01 17.24356938710700
2009-04-01 17.77125243627060
2009-07-01 17.74950688636420
2009-10-01 18.66490996925780
2010-01-01 19.84357878000040
2010-04-01 19.88900471665870
2010-07-01 19.59204252191900
2010-10-01 20.11455655320810
2011-01-01 21.07824031044270
2011-04-01 20.64330824760720
2011-07-01 21.28393484509740
2011-10-01 22.55645192254370
2012-01-01 24.18768403533480
2012-04-01 24.39813533706550
2012-07-01 24.79237524423310
2012-10-01 25.77438742487290
2013-01-01 26.93535377803710
2013-04-01 26.05707539243100
2013-07-01 25.64750964467880
2013-10-01 25.72764824952650
2014-01-01 25.92783572730170
2014-04-01 24.47303478862630
2014-07-01 23.66898223856060
2014-10-01 23.70151301961190
2015-01-01 23.77616880791640
2015-04-01 22.37187982012120
2015-07-01 21.18299526190530
2015-10-01 20.89517655648190
2016-01-01 20.99557425178560
2016-04-01 19.99807656159160
2016-07-01 18.91081612198720
2016-10-01 18.63104999142700
2017-01-01 18.75002754116850
2017-04-01 17.22267199352330
2017-07-01 16.38082779872610
2017-10-01 16.54601361739510
2018-01-01 16.74481590450940
2018-04-01 15.28452934633140
2018-07-01 14.55325107202240