Quarterly Percent
1999-01-01 12.28952868515600
2000-01-01 16.75774664263710
2000-04-01 16.31291936636770
2000-07-01 15.38364302869420
2000-10-01 15.97015529188750
2001-01-01 18.24848309737070
2001-04-01 18.37363543683200
2001-07-01 17.85789753225320
2001-10-01 18.49287239970280
2002-01-01 20.26138844418570
2002-04-01 19.89485703686960
2002-07-01 19.83595580850350
2002-10-01 19.73866607396660
2003-01-01 20.52715559842340
2003-04-01 19.36944649446490
2003-07-01 19.31940922325540
2003-10-01 19.26255076216820
2004-01-01 20.67126983939950
2004-04-01 19.07257349027030
2004-07-01 18.19427527405600
2004-10-01 17.97537779333680
2005-01-01 18.85572491188360
2005-04-01 18.04816997573290
2005-07-01 17.36400469624070
2005-10-01 16.74284854656540
2006-01-01 16.08004904849490
2006-04-01 14.05747570507300
2006-07-01 13.03929290277410
2006-10-01 12.21875551892620
2007-01-01 11.31980757163770
2007-04-01 9.55896835960582
2007-07-01 9.02643911928552
2007-10-01 8.52520590365063
2008-01-01 8.06361772478934
2008-04-01 7.08376023831662
2008-07-01 6.61355884689062
2008-10-01 6.72304168682142
2009-01-01 8.25422402821079
2009-04-01 7.87775555762255
2009-07-01 8.05656751097214
2009-10-01 8.47693947512459
2010-01-01 10.59322533136970
2010-04-01 9.52648160812714
2010-07-01 9.13321125585276
2010-10-01 9.30846722477439
2011-01-01 10.03988777536330
2011-04-01 9.44193535261943
2011-07-01 9.32501516333074
2011-10-01 9.72442265215732
2012-01-01 10.51138840295010
2012-04-01 9.88908840018245
2012-07-01 9.85097391613484
2012-10-01 10.10383248818520
2013-01-01 11.27950425882520
2013-04-01 10.44862184292470
2013-07-01 9.82208852599914
2013-10-01 9.76426335888822
2014-01-01 10.59979792412970
2014-04-01 9.11962895401631
2014-07-01 8.15440827505761
2014-10-01 8.08965295629820
2015-01-01 8.62054042825737
2015-04-01 7.41939780736554
2015-07-01 7.05550275395344
2015-10-01 6.91687965647174
2016-01-01 6.98701117642958
2016-04-01 6.17926716141002
2016-07-01 5.93725603585369
2016-10-01 5.54327829779356
2017-01-01 5.38376154306602
2017-04-01 4.97096573495864
2017-07-01 4.71801560552195
2017-10-01 4.47621265940721
2018-01-01 4.15760184365306
2018-04-01 3.59086279644988