Quarter	Percent
1998-04-01	8.51783517835178
1999-04-01	10.15673981191220
2000-01-01	15.18719806763280
2000-04-01	11.60606060606060
2000-07-01	12.96572280178840
2000-10-01	13.40915893445080
2001-01-01	13.38461538461540
2001-04-01	13.23124042879020
2001-07-01	11.45128054165440
2001-10-01	10.67843017949500
2002-01-01	10.43973426130970
2002-04-01	8.69565217391304
2002-07-01	11.14813692820360
2002-10-01	9.88581730769231
2003-01-01	9.54280454127033
2003-04-01	10.38602941176470
2003-07-01	9.77218225419664
2003-10-01	9.81210855949896
2004-01-01	9.14268585131894
2004-04-01	8.84476534296029
2004-07-01	9.27615571776156
2004-10-01	9.26488456865128
2005-01-01	7.62304921968788
2005-04-01	6.15338882282996
2005-07-01	7.22891566265060
2005-10-01	6.63888061923191
2006-01-01	5.46318289786223
2006-04-01	6.25901355638881
2006-07-01	5.69583088667058
2006-10-01	4.91176470588235
2007-01-01	3.71825876662636
2007-04-01	4.17156286721504
2007-07-01	3.46769413159455
2007-10-01	3.66696723775173
2008-01-01	4.67625899280576
2008-04-01	3.52941176470588
2008-07-01	5.50884314293998
2008-10-01	6.75129832660127
2009-01-01	8.74669797475785
2009-04-01	9.68320382546324
2009-07-01	11.71782762691850
2009-10-01	11.05812220566320
2010-01-01	14.18522860492380
2010-04-01	14.38596491228070
2010-07-01	14.85237101103490
2010-10-01	12.94188136608750
2011-01-01	13.12799043062200
2011-04-01	12.09370424597360
2011-07-01	10.88023088023090
2011-10-01	10.24042742653610
2012-01-01	9.97927154278946
2012-04-01	8.57142857142857
2012-07-01	9.51399116347570
2012-10-01	8.32570905763952
2013-01-01	9.05523694536674
2013-04-01	7.89861479516652
2013-07-01	7.59759759759760
2013-10-01	8.07715491259795
2014-01-01	7.68265914079649
2014-04-01	6.20415647921760
2014-07-01	6.82839173405211
2014-10-01	6.58135283363802
2015-01-01	5.63597166615337
2015-04-01	6.50674662668666
2015-07-01	5.80607132331270
2015-10-01	6.60517703064564
2016-01-01	5.54033485540335
2016-04-01	5.21865889212828
2016-07-01	7.49195200468247
2016-10-01	6.01458080194411
2017-01-01	5.26315789473684
2017-04-01	6.16155660377358
2017-07-01	4.53341183397115
2017-10-01	5.23712540005819
2018-01-01	6.08567208271787
2018-04-01	4.83348069554966