Quarter	Percent
1999-07-01	3.94615510654753
1999-10-01	2.83497380412462
2000-01-01	3.33828917983086
2000-04-01	2.53400489342883
2000-07-01	2.49097280867318
2000-10-01	2.40962045743724
2001-01-01	3.03290168369759
2001-04-01	2.23032543548521
2001-07-01	2.16861163149586
2001-10-01	2.06360472374545
2002-01-01	2.42170053113480
2002-04-01	1.91625397294532
2002-07-01	1.74992975290185
2002-10-01	1.67890038126325
2003-01-01	2.36821877898990
2003-04-01	2.32316220405856
2003-07-01	2.30328001477459
2003-10-01	2.29649233062969
2004-01-01	2.66474664221263
2004-04-01	2.30902205100088
2004-07-01	2.35294703431965
2004-10-01	2.19655256784630
2005-01-01	2.77300142585893
2005-04-01	2.61445783482440
2005-07-01	2.48696149134640
2005-10-01	2.39053242314935
2006-01-01	2.54788270939300
2006-04-01	2.07427890875002
2006-07-01	2.09874400407830
2006-10-01	2.04569113135167
2007-01-01	2.28152642978578
2007-04-01	2.05678290320094
2007-07-01	2.11853035561232
2007-10-01	2.11477049992565
2008-01-01	2.22932590666970
2008-04-01	2.00512153303446
2008-07-01	2.00033400979678
2008-10-01	2.02260552441824
2009-01-01	2.49612210117181
2009-04-01	2.73788894095416
2009-07-01	2.28954730236898
2009-10-01	2.32214277302229
2010-01-01	3.69954771652798
2010-04-01	2.32361340230874
2010-07-01	2.68990575185260
2010-10-01	2.41289832350651
2011-01-01	3.44775991813852
2011-04-01	2.66469679057629
2011-07-01	2.29257822398603
2011-10-01	2.10344129028482
2012-01-01	3.01980886898282
2012-04-01	2.39135224535336
2012-07-01	2.20880084826035
2012-10-01	2.04141606216567
2013-01-01	2.65157659091995
2013-04-01	2.25555619784097
2013-07-01	2.03738035688802
2013-10-01	2.01957522838330
2014-01-01	3.27512491005633
2014-04-01	3.13676271043538
2014-07-01	2.64878983797473
2014-10-01	2.49076709054484
2015-01-01	3.38553890923098
2015-04-01	3.13937534141258
2015-07-01	2.60343030981372
2015-10-01	2.37675068878699
2016-01-01	3.36160818934381
2016-04-01	2.80777133135701
2016-07-01	2.64680513851555
2016-10-01	2.70271297620808
2017-01-01	3.62656686427414
2017-04-01	2.96017705301870
2017-07-01	2.63517594214831
2017-10-01	2.51914035037905
2018-01-01	3.74844011949742
2018-04-01	3.10487064236794
2018-07-01	3.01488344508320