Quarter	Percent
1998-01-01	7.36402038061229
1998-04-01	5.69190600522193
1998-07-01	6.03572520417522
1998-10-01	6.06808731808732
1999-01-01	5.82992465016146
1999-04-01	5.06578665409506
1999-07-01	4.92490693594626
1999-10-01	5.01220922760571
2000-01-01	5.35104364326376
2000-04-01	4.73462510530750
2000-07-01	5.07867787861127
2000-10-01	4.86522573645998
2001-01-01	5.39483971853010
2001-04-01	4.94706924249289
2001-07-01	4.76778148011025
2001-10-01	5.01326801388038
2002-01-01	5.21441103268187
2002-04-01	5.31019978969506
2002-07-01	6.10479089889441
2002-10-01	7.47607416009290
2003-01-01	7.28311317386648
2003-04-01	7.25345402572654
2003-07-01	6.88291455279032
2003-10-01	7.46435560525580
2004-01-01	7.38663675692998
2004-04-01	7.17819806878940
2004-07-01	7.79771098174330
2004-10-01	7.91692938209332
2005-01-01	8.57288922096819
2005-04-01	8.03756603404422
2005-07-01	8.82650283847889
2005-10-01	9.08949778778235
2006-01-01	9.05904346471413
2006-04-01	8.22453802347654
2006-07-01	8.85490890883180
2006-10-01	9.47437480703921
2007-01-01	9.79329952358998
2007-04-01	9.37116093366093
2007-07-01	9.23644383603316
2007-10-01	9.56263334349284
2008-01-01	8.85362768770840
2008-04-01	8.29720891322534
2008-07-01	8.95715317644375
2008-10-01	8.89297057360426
2009-01-01	9.61311225462169
2009-04-01	9.51998162609095
2009-07-01	10.57435270755370
2009-10-01	10.65931977959340
2010-01-01	11.38748395863210
2010-04-01	11.55064484501090
2010-07-01	12.33006399818230
2010-10-01	12.19326612136200
2011-01-01	12.81153846153850
2011-04-01	12.39100504818720
2011-07-01	12.97171638899650
2011-10-01	14.01082849686440
2012-01-01	15.03936400123490
2012-04-01	14.76412011226880
2012-07-01	15.31538461538460
2012-10-01	16.88695381744670
2013-01-01	17.39437448511240
2013-04-01	16.42879425986590
2013-07-01	15.79091299761690
2013-10-01	15.86083297619510
2014-01-01	15.17371779721110
2014-04-01	14.34458398744110
2014-07-01	14.00413723117750
2014-10-01	13.78533306977660
2015-01-01	14.40147909208920
2015-04-01	11.84231192084180
2015-07-01	12.34203377819770
2015-10-01	12.40137969313720
2016-01-01	12.44699821676240
2016-04-01	10.91697842871930
2016-07-01	10.75277306280350
2016-10-01	10.55206976835960
2017-01-01	10.46837390995540
2017-04-01	9.28456749030818
2017-07-01	9.22082473423932
2017-10-01	8.42854906871185
2018-01-01	8.08653808536442
2018-04-01	7.08370592123168