Quarter	Growth rate same period previous year
1971-01-01	12.50000000000000
1971-04-01	7.84313725490194
1971-07-01	11.76470588235290
1971-10-01	15.68627450980390
1972-01-01	11.11111111111110
1972-04-01	14.54545454545460
1972-07-01	12.28070175438590
1972-10-01	11.86440677966100
1973-01-01	16.66666666666670
1973-04-01	22.22222222222220
1973-07-01	25.00000000000000
1973-10-01	25.75757575757580
1974-01-01	25.71428571428570
1974-04-01	23.37662337662340
1974-07-01	21.25000000000000
1974-10-01	25.30120481927710
1975-01-01	26.13636363636360
1975-04-01	25.26315789473690
1975-07-01	24.74226804123710
1975-10-01	18.26923076923080
1976-01-01	16.21621621621620
1976-04-01	15.96638655462180
1976-07-01	21.48760330578510
1976-10-01	25.20325203252030
1977-01-01	28.68217054263560
1977-04-01	39.13043478260870
1977-07-01	36.73469387755100
1977-10-01	30.51948051948050
1978-01-01	25.30120481927710
1978-04-01	15.62500000000000
1978-07-01	13.43283582089550
1978-10-01	17.91044776119400
1979-01-01	21.63461538461540
1979-04-01	22.52252252252250
1979-07-01	25.00000000000000
1979-10-01	27.00421940928270
1980-01-01	26.08695652173910
1980-04-01	27.20588235294120
1980-07-01	26.66666666666670
1980-10-01	26.24584717607970
1981-01-01	27.58620689655170
1981-04-01	26.87861271676300
1981-07-01	28.53185595567870
1981-10-01	26.84210526315790
1982-01-01	25.30712530712530
1982-04-01	24.82915717539860
1982-07-01	24.13793103448270
1982-10-01	24.68879668049800
1983-01-01	21.96078431372550
1983-04-01	21.53284671532840
1983-07-01	18.40277777777780
1983-10-01	16.97171381031610
1984-01-01	17.04180064308680
1984-04-01	15.01501501501500
1984-07-01	15.98240469208210
1984-10-01	16.64295874822190
1985-01-01	21.15384615384610
1985-04-01	26.50130548302870
1985-07-01	25.03160556257900
1985-10-01	23.53658536585360
1986-01-01	23.24263038548760
1986-04-01	17.33746130030960
1986-07-01	15.67239635995960
1986-10-01	19.54590325765050
1987-01-01	20.42318307267700
1987-04-01	22.33948988566400
1987-07-01	25.69930069930070
1987-10-01	24.52518579686210
1988-01-01	25.43926661573720
1988-04-01	29.11574406901510
1988-07-01	29.55493741307380
1988-10-01	28.11671087533160
1989-01-01	27.16199756394640
1989-04-01	24.44320712694880
1989-07-01	25.33548040794420
1989-10-01	26.60455486542440
1990-01-01	27.15517241379310
1990-04-01	28.41163310961970
1990-07-01	29.33618843683080
1990-10-01	31.35731807031890
1991-01-01	31.60075329566850
1991-04-01	31.25435540069690
1991-07-01	30.96026490066230
1991-10-01	28.07345160286330
1992-01-01	27.27532913566110
1992-04-01	27.50199097425000
1992-07-01	27.63590391908980
1992-10-01	25.73511543134880
1993-01-01	24.55588036878800
1993-04-01	22.21528211534460
1993-07-01	21.01822503961960
1993-10-01	22.22651720139160
1994-01-01	23.00054161400970
1994-04-01	23.62862010221460
1994-07-01	22.44229824848580
1994-10-01	22.37507906388360
1995-01-01	21.07735212094520
1995-04-01	21.37246796196780
1995-07-01	21.13636363636360
1995-10-01	20.04134901150020
1996-01-01	20.42671839010790
1996-04-01	19.80018165304270
1996-07-01	21.09038737446200
1996-10-01	21.78686759956940
1997-01-01	19.70002013287700
1997-04-01	18.61258529188780
1997-07-01	17.94567991250460
1997-10-01	17.76560014141770
1998-01-01	18.38365150113530
1998-04-01	20.70949185043140
1998-07-01	19.00162274940110
1998-10-01	16.71419993995800
1999-01-01	15.31576330183990
1999-04-01	10.02779984114380
1999-07-01	9.12987012987014
1999-10-01	9.40132467365441
2000-01-01	8.96938335489434
2000-04-01	9.87788004571976
2000-07-01	9.19909556110912
2000-10-01	8.85793216951743
2001-01-01	8.11238622872972
2001-04-01	7.92225568026281
2001-07-01	8.02637314734089
2001-10-01	7.80777537796978
2002-01-01	6.65132817402218
2002-04-01	5.91517857142858
2002-07-01	6.03278688524590
2002-10-01	6.81157968546528
2003-01-01	7.40831535595214
2003-04-01	7.59172334514799
2003-07-01	7.14047856905000
2003-10-01	6.40063771921598
2004-01-01	6.22632035422467
2004-04-01	5.64038641321284
2004-07-01	6.02077968208864
2004-10-01	5.73795778061786
2005-01-01	5.23827940354949
2005-04-01	4.96418036241046
2005-07-01	4.93341150850154
2005-10-01	5.07231275788771
2006-01-01	4.27929767251937
2006-04-01	4.03083346715913
2006-07-01	4.53783524904214
2006-10-01	4.32368107893693
2007-01-01	5.25099851202132
2007-04-01	6.17088607594938
2007-07-01	5.32966823197036
2007-10-01	5.42585551330801
2008-01-01	6.09025633394098
2008-04-01	6.43379012031552
2008-07-01	7.65522490847802
2008-10-01	7.77942078118799
2009-01-01	6.59279001262450
2009-04-01	4.76418155117652
2009-07-01	3.20527928352584
2009-10-01	2.36246821041361
2010-01-01	2.00684300565864
2010-04-01	2.10262094145262
2010-07-01	2.27710175186767
2010-10-01	2.70022883295193
2011-01-01	3.25098368057796
2011-04-01	3.02991603077805
2011-07-01	3.47676310165543
2011-10-01	3.89928698752231
2012-01-01	3.50159305303928
2012-04-01	3.35295940502017
2012-07-01	3.07327147745138
2012-10-01	2.75726846603962
2013-01-01	1.91036668175646
2013-04-01	2.05984648596785
2013-07-01	2.25491955260481
2013-10-01	1.84252109358699
2014-01-01	2.31876332622598
2014-04-01	2.81148094832399
2014-07-01	2.92173607861489
2014-10-01	3.53640329049441
2015-01-01	4.24300309687131
2015-04-01	4.48622699737113
2015-07-01	4.85351368247563
2015-10-01	6.35338026974299
2016-01-01	7.67693033845129
2016-04-01	8.24536454629983
2016-07-01	8.10591072928804
2016-10-01	6.06423140320094
2017-01-01	5.11319684389663
2017-04-01	4.33793992066900
2017-07-01	3.74529957382806
2017-10-01	4.08321844842713
2018-01-01	3.39261621489025
2018-04-01	3.16238074483027
2018-07-01	3.14855982988593