Quarter	Percent
1999-07-01	4.46369376188026
1999-10-01	3.18343422904771
2000-01-01	3.62008101246729
2000-04-01	2.88284454716157
2000-07-01	2.90299081220234
2000-10-01	2.71330518124837
2001-01-01	3.39580135954355
2001-04-01	2.59939100461540
2001-07-01	2.55795787129706
2001-10-01	2.38519280464124
2002-01-01	2.72654870852925
2002-04-01	2.18372920293750
2002-07-01	2.03157753019326
2002-10-01	1.95682539615573
2003-01-01	2.64421891895995
2003-04-01	2.69910498741961
2003-07-01	2.60393330523650
2003-10-01	2.58667891319407
2004-01-01	2.96396400760373
2004-04-01	2.59028375874853
2004-07-01	2.64479374875471
2004-10-01	2.52648903456816
2005-01-01	3.10926531981361
2005-04-01	2.88767523239740
2005-07-01	2.84981114981635
2005-10-01	2.70881873776236
2006-01-01	2.82340949408846
2006-04-01	2.33945693932000
2006-07-01	2.41883282412307
2006-10-01	2.35248391162887
2007-01-01	2.49829891821193
2007-04-01	2.39558575422321
2007-07-01	2.41426585220382
2007-10-01	2.38464387534422
2008-01-01	2.53800262243948
2008-04-01	2.32167981114131
2008-07-01	2.32697009143685
2008-10-01	2.30218973012111
2009-01-01	2.79862205660930
2009-04-01	3.03106810094904
2009-07-01	2.58854150035675
2009-10-01	2.57185223351544
2010-01-01	3.37001575855979
2010-04-01	2.57578499601344
2010-07-01	3.05699337507738
2010-10-01	2.71438090385324
2011-01-01	3.41120724956631
2011-04-01	3.05026610572844
2011-07-01	2.57807998338728
2011-10-01	2.34305099675623
2012-01-01	2.91457704310920
2012-04-01	2.65914727285505
2012-07-01	2.50605330297533
2012-10-01	2.34919041326188
2013-01-01	2.70758189626962
2013-04-01	2.63901556133435
2013-07-01	2.44416223350218
2013-10-01	2.36425789146887
2014-01-01	3.19028621465327
2014-04-01	3.63981071878525
2014-07-01	3.15222176005731
2014-10-01	2.93882646287273
2015-01-01	3.36444627798484
2015-04-01	3.58659941703543
2015-07-01	3.04450748754561
2015-10-01	2.69928496206463
2016-01-01	3.36513728761586
2016-04-01	3.21193480335425
2016-07-01	2.99922974828780
2016-10-01	3.11808489803969
2017-01-01	3.64230188139196
2017-04-01	3.41272131297552
2017-07-01	3.03044051104627
2017-10-01	2.97733179638653
2018-01-01	3.64042577969848
2018-04-01	3.54400150181097
2018-07-01	3.41123489612135