Quarter	Growth rate same period previous year
1981-01-01	31.60928701444010
1981-04-01	31.23723448020550
1981-07-01	31.27741943766020
1981-10-01	32.78158285895880
1982-01-01	35.96373362321290
1982-04-01	44.35565852313770
1982-07-01	57.62325499455510
1982-10-01	69.94962161020400
1983-01-01	77.89480238327770
1983-04-01	76.06205667326600
1983-07-01	66.91082320986620
1983-10-01	58.60384243704550
1984-01-01	53.68262335523340
1984-04-01	47.91243028959400
1984-07-01	44.65356938979770
1984-10-01	42.05165268184890
1985-01-01	40.94493817201520
1985-04-01	42.60723083560320
1985-07-01	46.19829014037600
1985-10-01	53.07169150666550
1986-01-01	58.70330985645450
1986-04-01	62.33058215030410
1986-07-01	64.61940787430050
1986-10-01	67.27874406674290
1987-01-01	70.43905442294330
1987-04-01	75.61257589384300
1987-07-01	80.84415017170330
1987-10-01	90.10708415551910
1988-01-01	107.00041203260600
1988-04-01	132.25731098126000
1988-07-01	146.30812909471500
1988-10-01	139.74992336294000
1989-01-01	119.97785797350600
1989-04-01	87.80190306422810
1989-07-01	68.98644085387010
1989-10-01	58.87635123273710
1990-01-01	50.62046958021850
1990-04-01	49.24931128419640
1990-07-01	48.11218499328080
1990-10-01	45.80886060442990
1991-01-01	43.19891029917140
1991-04-01	37.00520166938260
1991-07-01	29.52852843396630
1991-10-01	23.99902054382490
1992-01-01	20.86580564880360
1992-04-01	18.86620698683180
1992-07-01	18.12127618419380
1992-10-01	15.87207334545600
1993-01-01	12.06777397725430
1993-04-01	10.61306808725670
1993-07-01	9.14638011105406
1993-10-01	8.34321564637263
1994-01-01	7.83570996671069
1994-04-01	7.39816291644463
1994-07-01	7.20057012144995
1994-10-01	6.97264045745492
1995-01-01	12.20964341801950
1995-04-01	24.78875840079400
1995-07-01	35.84215909216400
1995-10-01	41.85071521496560
1996-01-01	40.29402904284280
1996-04-01	30.55402459216980
1996-07-01	24.21065696113280
1996-10-01	22.49885596867880
1997-01-01	21.74848594550930
1997-04-01	20.55675797902280
1997-07-01	18.76791364292110
1997-10-01	17.44939104699560
1998-01-01	16.32999572129410
1998-04-01	15.71247991650140
1998-07-01	15.53099221188580
1998-10-01	15.98550027509360
1999-01-01	15.27482743008670
1999-04-01	14.89746148665960
1999-07-01	14.36948430292960
1999-10-01	12.95551914678740
2000-01-01	11.24460588455090
2000-04-01	9.42799877179007
2000-07-01	7.70221801578411
2000-10-01	6.52751802421521
2001-01-01	5.87048717263669
2001-04-01	5.59023130200746
2001-07-01	5.69601473080093
2001-10-01	5.96927411273386
2002-01-01	6.48906156084696
2002-04-01	7.27634013334560
2002-07-01	7.60358427538109
2002-10-01	7.53164046256537
2003-01-01	6.71998955481562
2003-04-01	5.65785402556470
2003-07-01	5.05362078969453
2003-10-01	4.63201009066681
2004-01-01	4.15887564978909
2004-04-01	4.00912226433122
2004-07-01	3.80824619655512
2004-10-01	3.45517536640844
2005-01-01	3.35523500157642
2005-04-01	3.07721712485991
2005-07-01	2.90801609582835
2005-10-01	3.00158786097622
2006-01-01	3.03062009860805
2006-04-01	3.23604672886675
2006-07-01	3.25335986820826
2006-10-01	3.17830726197173
2007-01-01	3.22408890324404
2007-04-01	3.04509009298002
2007-07-01	2.97932890760723
2007-10-01	2.91045716627375
2008-01-01	2.90820980531580
2008-04-01	2.88036233841907
2008-07-01	2.90573227415975
2008-10-01	3.39498527879655
2009-01-01	3.60723577725220
2009-04-01	3.53855036732997
2009-07-01	3.37222115426025
2009-10-01	2.80861937939219
2010-01-01	2.42457557218154
2010-04-01	2.36131929103147
2010-07-01	2.39121295127978
2010-10-01	2.27903556644782
2011-01-01	2.19738195411435
2011-04-01	2.12156885194079
2011-07-01	1.89269363236872
2011-10-01	1.89001153553555
2012-01-01	1.84384199868710
2012-04-01	1.78542338038380
2012-07-01	1.86549627742056
2012-10-01	1.95863075488857
2013-01-01	2.03385792044483
2013-04-01	2.09372718348692
2013-07-01	2.23207700263701
2013-10-01	2.18329698311605
2014-01-01	2.12435642747583
2014-04-01	2.06226701866408
2014-07-01	1.95956173827180
2014-10-01	2.02343993850871
2015-01-01	2.08206168041243
2015-04-01	2.13022906664212
2015-07-01	2.11188539788523
2015-10-01	2.03479008522399
2016-01-01	2.11755661652690
2016-04-01	2.18552612015003
2016-07-01	2.25525462435628
2016-10-01	2.33335747955183
2017-01-01	2.41851177451701
2017-04-01	2.43448383608849
2017-07-01	2.46405919641039
2017-10-01	2.50853900427476
2018-01-01	2.43549873230569
2018-04-01	2.48017679542235
2018-07-01	2.54778803347302