Month Growth rate same period previous year 1980-01-01 1.351351351351350 1980-02-01 1.351351351351350 1980-03-01 4.910714285714300 1980-04-01 4.910714285714300 1980-05-01 4.910714285714300 1980-06-01 7.555555555555550 1980-07-01 7.555555555555550 1980-08-01 7.555555555555550 1980-09-01 9.777777777777780 1980-10-01 9.777777777777780 1980-11-01 9.777777777777780 1980-12-01 10.666666666666700 1981-01-01 10.666666666666700 1981-02-01 10.666666666666700 1981-03-01 11.489361702127700 1981-04-01 11.489361702127700 1981-05-01 11.489361702127700 1981-06-01 11.570247933884300 1981-07-01 11.570247933884300 1981-08-01 11.570247933884300 1981-09-01 10.526315789473700 1981-10-01 10.526315789473700 1981-11-01 10.526315789473700 1981-12-01 10.441767068273100 1982-01-01 10.441767068273100 1982-02-01 10.441767068273100 1982-03-01 13.358778625954200 1982-04-01 13.358778625954200 1982-05-01 13.358778625954200 1982-06-01 13.333333333333300 1982-07-01 13.333333333333300 1982-08-01 13.333333333333300 1982-09-01 12.454212454212400 1982-10-01 12.454212454212400 1982-11-01 12.454212454212400 1982-12-01 12.363636363636400 1983-01-01 12.363636363636400 1983-02-01 12.363636363636400 1983-03-01 9.427609427609440 1983-04-01 9.427609427609440 1983-05-01 9.427609427609440 1983-06-01 8.169934640522880 1983-07-01 8.169934640522880 1983-08-01 8.169934640522880 1983-09-01 8.469055374592820 1983-10-01 8.469055374592820 1983-11-01 8.469055374592820 1983-12-01 8.090614886731400 1984-01-01 8.090614886731400 1984-02-01 8.090614886731400 1984-03-01 7.384615384615370 1984-04-01 7.384615384615370 1984-05-01 7.384615384615370 1984-06-01 6.948640483383680 1984-07-01 6.948640483383680 1984-08-01 6.948640483383680 1984-09-01 7.207207207207230 1984-10-01 7.207207207207230 1984-11-01 7.207207207207230 1984-12-01 6.886227544910180 1985-01-01 6.886227544910180 1985-02-01 6.886227544910180 1985-03-01 5.157593123209190 1985-04-01 5.157593123209190 1985-05-01 5.157593123209190 1985-06-01 4.237288135593220 1985-07-01 4.237288135593220 1985-08-01 4.237288135593220 1985-09-01 4.201680672268910 1985-10-01 4.201680672268910 1985-11-01 4.201680672268910 1985-12-01 4.481792717086820 1986-01-01 4.481792717086820 1986-02-01 4.481792717086820 1986-03-01 4.632152588555850 1986-04-01 4.632152588555850 1986-05-01 4.632152588555850 1986-06-01 4.878048780487810 1986-07-01 4.878048780487810 1986-08-01 4.878048780487810 1986-09-01 5.107526881720420 1986-10-01 5.107526881720420 1986-11-01 5.107526881720420 1986-12-01 5.361930294906160 1987-01-01 5.361930294906160 1987-02-01 5.361930294906160 1987-03-01 5.729166666666670 1987-04-01 5.729166666666670 1987-05-01 5.729166666666670 1987-06-01 5.943152454780370 1987-07-01 5.943152454780370 1987-08-01 5.943152454780370 1987-09-01 6.138107416879800 1987-10-01 6.138107416879800 1987-11-01 6.138107416879800 1987-12-01 6.106870229007650 1988-01-01 6.106870229007650 1988-02-01 6.106870229007650 1988-03-01 7.635467980295570 1988-04-01 7.635467980295570 1988-05-01 7.635467980295570 1988-06-01 8.536585365853650 1988-07-01 8.536585365853650 1988-08-01 8.536585365853650 1988-09-01 8.433734939759030 1988-10-01 8.433734939759030 1988-11-01 8.433734939759030 1988-12-01 8.633093525179840 1989-01-01 8.633093525179840 1989-02-01 8.633093525179840 1989-03-01 7.551487414187640 1989-04-01 7.551487414187640 1989-05-01 7.551487414187640 1989-06-01 7.415730337078640 1989-07-01 7.415730337078640 1989-08-01 7.415730337078640 1989-09-01 7.333333333333330 1989-10-01 7.333333333333330 1989-11-01 7.333333333333330 1989-12-01 7.284768211920550 1990-01-01 7.284768211920550 1990-02-01 7.284768211920550 1990-03-01 7.021276595744670 1990-04-01 7.021276595744670 1990-05-01 7.021276595744670 1990-06-01 6.276150627615070 1990-07-01 6.276150627615070 1990-08-01 6.276150627615070 1990-09-01 6.004140786749490 1990-10-01 6.004140786749490 1990-11-01 6.004140786749490 1990-12-01 5.555555555555550 1991-01-01 5.555555555555550 1991-02-01 5.555555555555550 1991-03-01 5.168986083499010 1991-04-01 5.168986083499010 1991-05-01 5.168986083499010 1991-06-01 4.724409448818900 1991-07-01 4.724409448818900 1991-08-01 4.724409448818900 1991-09-01 4.492187500000000 1991-10-01 4.492187500000000 1991-11-01 4.492187500000000 1991-12-01 4.483430799220280 1992-01-01 4.483430799220280 1992-02-01 4.483430799220280 1992-03-01 3.402646502835540 1992-04-01 3.402646502835540 1992-05-01 3.402646502835540 1992-06-01 3.571428571428570 1992-07-01 3.571428571428570 1992-08-01 3.571428571428570 1992-09-01 3.738317757009350 1992-10-01 3.738317757009350 1992-11-01 3.738317757009350 1992-12-01 3.917910447761200 1993-01-01 3.917910447761200 1993-02-01 3.917910447761200 1993-03-01 3.290676416819020 1993-04-01 3.290676416819020 1993-05-01 3.290676416819020 1993-06-01 2.903811252268600 1993-07-01 2.903811252268600 1993-08-01 2.903811252268600 1993-09-01 2.342342342342320 1993-10-01 2.342342342342320 1993-11-01 2.342342342342320 1993-12-01 1.795332136445240 1994-01-01 1.795332136445240 1994-02-01 1.795332136445240 1994-03-01 0.530973451327414 1994-04-01 0.530973451327414 1994-05-01 0.530973451327414 1994-06-01 0.352733686067000 1994-07-01 0.352733686067000 1994-08-01 0.352733686067000 1994-09-01 0.352112676056358 1994-10-01 0.352112676056358 1994-11-01 0.352112676056358 1994-12-01 0.705467372134039 1995-01-01 0.705467372134039 1995-02-01 0.705467372134039 1995-03-01 1.232394366197200 1995-04-01 1.232394366197200 1995-05-01 1.232394366197200 1995-06-01 1.581722319859400 1995-07-01 1.581722319859400 1995-08-01 1.581722319859400 1995-09-01 2.105263157894740 1995-10-01 2.105263157894740 1995-11-01 2.105263157894740 1995-12-01 1.751313485113840 1996-01-01 1.751313485113840 1996-02-01 1.751313485113840 1996-03-01 2.086956521739130 1996-04-01 2.086956521739130 1996-05-01 2.086956521739130 1996-06-01 1.730103806228380 1996-07-01 1.730103806228380 1996-08-01 1.730103806228380 1996-09-01 1.374570446735380 1996-10-01 1.374570446735380 1996-11-01 1.374570446735380 1996-12-01 1.721170395869190 1997-01-01 1.721170395869190 1997-02-01 1.721170395869190 1997-03-01 1.703577512776830 1997-04-01 1.703577512776830 1997-05-01 1.703577512776830 1997-06-01 2.721088435374150 1997-07-01 2.721088435374150 1997-08-01 2.721088435374150 1997-09-01 3.050847457627120 1997-10-01 3.050847457627120 1997-11-01 3.050847457627120 1997-12-01 3.045685279187800 1998-01-01 3.045685279187800 1998-02-01 3.045685279187800 1998-03-01 2.680067001675030 1998-04-01 2.680067001675030 1998-05-01 2.680067001675030 1998-06-01 2.317880794701990 1998-07-01 2.317880794701990 1998-08-01 2.317880794701990 1998-09-01 1.809210526315790 1998-10-01 1.809210526315790 1998-11-01 1.809210526315790 1998-12-01 1.642036124794750 1999-01-01 1.642036124794750 1999-02-01 1.642036124794750 1999-03-01 3.099510603588910 1999-04-01 3.099510603588910 1999-05-01 3.099510603588910 1999-06-01 2.588996763754050 1999-07-01 2.588996763754050 1999-08-01 2.588996763754050 1999-09-01 3.231017770597740 1999-10-01 3.231017770597740 1999-11-01 3.231017770597740 1999-12-01 3.392568659127630 2000-01-01 4.684975767366720 2000-02-01 4.846526655896610 2000-03-01 3.006329113924040 2000-04-01 3.322784810126590 2000-05-01 3.322784810126590 2000-06-01 3.470031545741310 2000-07-01 3.785488958990540 2000-08-01 4.416403785488960 2000-09-01 4.068857589984350 2000-10-01 3.912363067292650 2000-11-01 4.381846635367770 2000-12-01 4.218750000000000 2001-01-01 4.166666666666670 2001-02-01 4.006163328197230 2001-03-01 3.993855606758850 2001-04-01 3.981623277182240 2001-05-01 3.981623277182240 2001-06-01 3.810975609756100 2001-07-01 3.799392097264420 2001-08-01 3.323262839879160 2001-09-01 3.458646616541340 2001-10-01 3.765060240963860 2001-11-01 3.598200899550210 2001-12-01 4.347826086956510 2002-01-01 4.148148148148140 2002-02-01 4.000000000000000 2002-03-01 4.431314623338260 2002-04-01 4.418262150220920 2002-05-01 4.712812960235630 2002-06-01 4.992657856093980 2002-07-01 5.270863836017590 2002-08-01 4.970760233918120 2002-09-01 4.360465116279070 2002-10-01 4.354136429608130 2002-11-01 4.196816208393640 2002-12-01 3.735632183908070 2003-01-01 3.840682788051210 2003-02-01 4.273504273504280 2003-03-01 3.818953323903820 2003-04-01 4.372355430183340 2003-05-01 4.360056258790440 2003-06-01 4.055944055944080 2003-07-01 3.616133518776060 2003-08-01 3.760445682451260 2003-09-01 4.038997214484680 2003-10-01 3.894297635604990 2003-11-01 4.027777777777800 2003-12-01 3.739612188365650 2004-01-01 2.602739726027410 2004-02-01 2.732240437158460 2004-03-01 2.724795640326980 2004-04-01 1.891891891891910 2004-05-01 1.752021563342320 2004-06-01 1.881720430107510 2004-07-01 1.610738255033560 2004-08-01 1.744966442953020 2004-09-01 1.740294511378850 2004-10-01 1.874163319946450 2004-11-01 1.735647530040040 2004-12-01 1.869158878504660 2005-01-01 2.269692923898520 2005-02-01 1.994680851063830 2005-03-01 1.724137931034470 2005-04-01 2.254641909814300 2005-05-01 2.251655629139080 2005-06-01 1.846965699208440 2005-07-01 2.113606340819020 2005-08-01 1.978891820580480 2005-09-01 1.973684210526320 2005-10-01 1.839684625492770 2005-11-01 1.968503937007880 2005-12-01 1.965923984272610 2006-01-01 2.088772845953000 2006-02-01 2.086049543676660 2006-03-01 2.346805736636250 2006-04-01 2.075226977950730 2006-05-01 2.072538860103630 2006-06-01 2.331606217616580 2006-07-01 2.457956015523930 2006-08-01 2.328589909443710 2006-09-01 2.193548387096780 2006-10-01 2.580645161290320 2006-11-01 2.316602316602320 2006-12-01 2.185089974293060 2007-01-01 2.301790281329920 2007-02-01 2.043422733077910 2007-03-01 1.910828025477710 2007-04-01 1.778907242693760 2007-05-01 1.776649746192900 2007-06-01 1.518987341772150 2007-07-01 1.767676767676760 2007-08-01 1.896333754740840 2007-09-01 1.767676767676760 2007-10-01 1.635220125786150 2007-11-01 2.012578616352190 2007-12-01 2.515723270440250 2008-01-01 2.125000000000000 2008-02-01 2.252816020025030 2008-03-01 3.125000000000000 2008-04-01 3.370786516853940 2008-05-01 3.117206982543640 2008-06-01 3.117206982543640 2008-07-01 2.977667493796540 2008-08-01 3.225806451612920 2008-09-01 3.349875930521100 2008-10-01 3.341584158415840 2008-11-01 3.082614056720100 2008-12-01 2.944785276073620 2009-01-01 3.794369645042830 2009-02-01 4.039167686658500 2009-03-01 3.272727272727280 2009-04-01 3.019323671497590 2009-05-01 3.385731559854890 2009-06-01 4.111245465538080 2009-07-01 3.855421686746990 2009-08-01 3.605769230769230 2009-09-01 3.241296518607450 2009-10-01 3.113772455089820 2009-11-01 3.110047846889970 2009-12-01 2.741358760429080 2010-01-01 3.066037735849070 2010-02-01 3.294117647058830 2010-03-01 3.169014084507040 2010-04-01 3.048065650644800 2010-05-01 2.923976608187140 2010-06-01 2.206736353077820 2010-07-01 2.204176334106720 2010-08-01 2.436194895591640 2010-09-01 2.906976744186050 2010-10-01 3.019744483159120 2010-11-01 2.900232018561470 2010-12-01 3.016241299303930 2011-01-01 2.517162471395860 2011-02-01 2.164009111617310 2011-03-01 2.161547212741740 2011-04-01 2.161547212741740 2011-05-01 2.159090909090910 2011-06-01 2.272727272727270 2011-07-01 2.270147559591360 2011-08-01 2.265005662514160 2011-09-01 2.372881355932190 2011-10-01 2.142051860202920 2011-11-01 2.254791431792560 2011-12-01 2.252252252252250 2012-01-01 1.785714285714300 2012-02-01 1.783723522853960 2012-03-01 1.893095768374170 2012-04-01 1.893095768374170 2012-05-01 1.890989988876520 2012-06-01 2.000000000000000 2012-07-01 1.997780244173160 2012-08-01 1.882613510520490 2012-09-01 1.766004415011050 2012-10-01 1.876379690949240 2012-11-01 2.094818081587640 2012-12-01 2.092511013215860 2013-01-01 2.521929824561410 2013-02-01 2.847754654983570 2013-03-01 2.732240437158470 2013-04-01 2.950819672131150 2013-05-01 3.275109170305680 2013-06-01 2.941176470588240 2013-07-01 3.155603917301400 2013-08-01 3.260869565217390 2013-09-01 3.470715835141000 2013-10-01 3.575297941495120 2013-11-01 3.347732181425500 2013-12-01 3.236245954692560 2014-01-01 2.887700534759360 2014-02-01 2.662406815761450 2014-03-01 2.659574468085100 2014-04-01 2.653927813163480 2014-05-01 2.431289640591980 2014-06-01 2.857142857142860 2014-07-01 2.848101265822790 2014-08-01 2.736842105263150 2014-09-01 2.725366876310260 2014-10-01 2.615062761506280 2014-11-01 2.612330198537100 2014-12-01 2.716823406478570 2015-01-01 3.118503118503120 2015-02-01 3.008298755186710 2015-03-01 3.005181347150270 2015-04-01 3.102378490175790 2015-05-01 2.889576883384920 2015-06-01 2.880658436213980 2015-07-01 2.769230769230770 2015-08-01 2.766393442622940 2015-09-01 2.551020408163280 2015-10-01 2.548419979612640 2015-11-01 2.342158859470470 2015-12-01 2.238046795523920 2016-01-01 2.016129032258050 2016-02-01 1.812688821752260 2016-03-01 2.012072434607640 2016-04-01 1.905717151454360 2016-05-01 1.905717151454360 2016-06-01 1.900000000000010 2016-07-01 1.896207584830330 2016-08-01 1.894317048853450 2016-09-01 1.791044776119380 2016-10-01 1.789264413518890 2016-11-01 2.089552238805960 2016-12-01 2.089552238805960 2017-01-01 2.173913043478260 2017-02-01 2.472799208704270 2017-03-01 2.268244575936900 2017-04-01 2.165354330708660 2017-05-01 2.263779527559070 2017-06-01 2.060843964671240 2017-07-01 2.056807051909910 2017-08-01 2.054794520547940 2017-09-01 1.955034213098730 2017-10-01 1.953125000000000 2017-11-01 2.046783625731010 2017-12-01 2.046783625731010 2018-01-01 1.740812379110250 2018-02-01 1.737451737451740 2018-03-01 1.735776277724180 2018-04-01 1.734104046242780 2018-05-01 1.828681424446570 2018-06-01 1.826923076923090 2018-07-01 1.631477927063350 2018-08-01 1.629913710450640 2018-09-01 1.821668264621300 2018-10-01 1.819923371647500