Month Growth rate same period previous year 1980-01-01 0.888888888888890 1980-02-01 0.888888888888890 1980-03-01 5.309734513274340 1980-04-01 5.309734513274340 1980-05-01 5.309734513274340 1980-06-01 7.929515418502200 1980-07-01 7.929515418502200 1980-08-01 7.929515418502200 1980-09-01 10.132158590308400 1980-10-01 10.132158590308400 1980-11-01 10.132158590308400 1980-12-01 11.013215859030800 1981-01-01 11.013215859030800 1981-02-01 11.013215859030800 1981-03-01 11.344537815126000 1981-04-01 11.344537815126000 1981-05-01 11.344537815126000 1981-06-01 11.428571428571400 1981-07-01 11.428571428571400 1981-08-01 11.428571428571400 1981-09-01 10.000000000000000 1981-10-01 10.000000000000000 1981-11-01 10.000000000000000 1981-12-01 9.920634920634930 1982-01-01 9.920634920634930 1982-02-01 9.920634920634930 1982-03-01 13.207547169811300 1982-04-01 13.207547169811300 1982-05-01 13.207547169811300 1982-06-01 13.186813186813200 1982-07-01 13.186813186813200 1982-08-01 13.186813186813200 1982-09-01 12.727272727272700 1982-10-01 12.727272727272700 1982-11-01 12.727272727272700 1982-12-01 12.635379061371800 1983-01-01 12.635379061371800 1983-02-01 12.635379061371800 1983-03-01 9.666666666666680 1983-04-01 9.666666666666680 1983-05-01 9.666666666666680 1983-06-01 8.090614886731400 1983-07-01 8.090614886731400 1983-08-01 8.090614886731400 1983-09-01 8.387096774193560 1983-10-01 8.387096774193560 1983-11-01 8.387096774193560 1983-12-01 8.333333333333320 1984-01-01 8.333333333333320 1984-02-01 8.333333333333320 1984-03-01 7.294832826747710 1984-04-01 7.294832826747710 1984-05-01 7.294832826747710 1984-06-01 7.185628742514960 1984-07-01 7.185628742514960 1984-08-01 7.185628742514960 1984-09-01 7.142857142857130 1984-10-01 7.142857142857130 1984-11-01 7.142857142857130 1984-12-01 6.804733727810680 1985-01-01 6.804733727810680 1985-02-01 6.804733727810680 1985-03-01 5.099150141643060 1985-04-01 5.099150141643060 1985-05-01 5.099150141643060 1985-06-01 4.189944134078220 1985-07-01 4.189944134078220 1985-08-01 4.189944134078220 1985-09-01 4.444444444444450 1985-10-01 4.444444444444450 1985-11-01 4.444444444444450 1985-12-01 4.432132963988920 1986-01-01 4.432132963988920 1986-02-01 4.432132963988920 1986-03-01 4.582210242587590 1986-04-01 4.582210242587590 1986-05-01 4.582210242587590 1986-06-01 4.825737265415550 1986-07-01 4.825737265415550 1986-08-01 4.825737265415550 1986-09-01 5.053191489361710 1986-10-01 5.053191489361710 1986-11-01 5.053191489361710 1986-12-01 5.305039787798400 1987-01-01 5.305039787798400 1987-02-01 5.305039787798400 1987-03-01 5.670103092783520 1987-04-01 5.670103092783520 1987-05-01 5.670103092783520 1987-06-01 6.138107416879800 1987-07-01 6.138107416879800 1987-08-01 6.138107416879800 1987-09-01 6.329113924050620 1987-10-01 6.329113924050620 1987-11-01 6.329113924050620 1987-12-01 6.297229219143580 1988-01-01 6.297229219143580 1988-02-01 6.297229219143580 1988-03-01 7.804878048780490 1988-04-01 7.804878048780490 1988-05-01 7.804878048780490 1988-06-01 8.433734939759030 1988-07-01 8.433734939759030 1988-08-01 8.433734939759030 1988-09-01 8.333333333333340 1988-10-01 8.333333333333340 1988-11-01 8.333333333333340 1988-12-01 8.530805687203770 1989-01-01 8.530805687203770 1989-02-01 8.530805687203770 1989-03-01 7.692307692307690 1989-04-01 7.692307692307690 1989-05-01 7.692307692307690 1989-06-01 7.333333333333330 1989-07-01 7.333333333333330 1989-08-01 7.333333333333330 1989-09-01 7.472527472527470 1989-10-01 7.472527472527470 1989-11-01 7.472527472527470 1989-12-01 7.423580786026220 1990-01-01 7.423580786026220 1990-02-01 7.423580786026220 1990-03-01 6.932773109243690 1990-04-01 6.932773109243690 1990-05-01 6.932773109243690 1990-06-01 6.418219461697730 1990-07-01 6.418219461697730 1990-08-01 6.418219461697730 1990-09-01 5.930470347648270 1990-10-01 5.930470347648270 1990-11-01 5.930470347648270 1990-12-01 5.487804878048770 1991-01-01 5.487804878048770 1991-02-01 5.487804878048770 1991-03-01 5.304518664047160 1991-04-01 5.304518664047160 1991-05-01 5.304518664047160 1991-06-01 4.863813229571990 1991-07-01 4.863813229571990 1991-08-01 4.863813229571990 1991-09-01 4.633204633204640 1991-10-01 4.633204633204640 1991-11-01 4.633204633204640 1991-12-01 4.624277456647400 1992-01-01 4.624277456647400 1992-02-01 4.624277456647400 1992-03-01 3.358208955223880 1992-04-01 3.358208955223880 1992-05-01 3.358208955223880 1992-06-01 3.339517625231910 1992-07-01 3.339517625231910 1992-08-01 3.339517625231910 1992-09-01 3.690036900369010 1992-10-01 3.690036900369010 1992-11-01 3.690036900369010 1992-12-01 3.683241252302010 1993-01-01 3.683241252302010 1993-02-01 3.683241252302010 1993-03-01 3.249097472924190 1993-04-01 3.249097472924190 1993-05-01 3.249097472924190 1993-06-01 2.872531418312370 1993-07-01 2.872531418312370 1993-08-01 2.872531418312370 1993-09-01 2.135231316725960 1993-10-01 2.135231316725960 1993-11-01 2.135231316725960 1993-12-01 1.776198934280640 1994-01-01 1.776198934280640 1994-02-01 1.776198934280640 1994-03-01 0.174825174825156 1994-04-01 0.174825174825156 1994-05-01 0.174825174825156 1994-06-01 0.174520069808028 1994-07-01 0.174520069808028 1994-08-01 0.174520069808028 1994-09-01 0.174216027874584 1994-10-01 0.174216027874584 1994-11-01 0.174216027874584 1994-12-01 0.698080279232132 1995-01-01 0.698080279232132 1995-02-01 0.698080279232132 1995-03-01 1.221640488656200 1995-04-01 1.221640488656200 1995-05-01 1.221640488656200 1995-06-01 1.393728222996540 1995-07-01 1.393728222996540 1995-08-01 1.393728222996540 1995-09-01 1.913043478260870 1995-10-01 1.913043478260870 1995-11-01 1.913043478260870 1995-12-01 1.386481802426320 1996-01-01 1.386481802426320 1996-02-01 1.386481802426320 1996-03-01 1.896551724137950 1996-04-01 1.896551724137950 1996-05-01 1.896551724137950 1996-06-01 1.718213058419250 1996-07-01 1.718213058419250 1996-08-01 1.718213058419250 1996-09-01 1.365187713310560 1996-10-01 1.365187713310560 1996-11-01 1.365187713310560 1996-12-01 1.709401709401710 1997-01-01 1.709401709401710 1997-02-01 1.709401709401710 1997-03-01 1.692047377326550 1997-04-01 1.692047377326550 1997-05-01 1.692047377326550 1997-06-01 2.702702702702690 1997-07-01 2.702702702702690 1997-08-01 2.702702702702690 1997-09-01 3.198653198653200 1997-10-01 3.198653198653200 1997-11-01 3.198653198653200 1997-12-01 3.025210084033620 1998-01-01 3.025210084033620 1998-02-01 3.025210084033620 1998-03-01 2.828618968386030 1998-04-01 2.828618968386030 1998-05-01 2.828618968386030 1998-06-01 2.302631578947370 1998-07-01 2.302631578947370 1998-08-01 2.302631578947370 1998-09-01 1.794453507340950 1998-10-01 1.794453507340950 1998-11-01 1.794453507340950 1998-12-01 1.794453507340950 1999-01-01 1.794453507340950 1999-02-01 1.794453507340950 1999-03-01 3.074433656957930 1999-04-01 3.074433656957930 1999-05-01 3.074433656957930 1999-06-01 2.733118971061100 1999-07-01 2.733118971061100 1999-08-01 2.733118971061100 1999-09-01 3.044871794871800 1999-10-01 3.044871794871800 1999-11-01 3.044871794871800 1999-12-01 3.365384615384620 2000-01-01 4.807692307692310 2000-02-01 4.967948717948720 2000-03-01 2.982731554160110 2000-04-01 3.610675039246470 2000-05-01 3.610675039246470 2000-06-01 3.599374021909240 2000-07-01 3.755868544600940 2000-08-01 5.007824726134570 2000-09-01 5.132192846034200 2000-10-01 4.665629860031090 2000-11-01 5.443234836702940 2000-12-01 5.116279069767430 2001-01-01 4.740061162079520 2001-02-01 4.885496183206110 2001-03-01 4.725609756097580 2001-04-01 4.545454545454550 2001-05-01 4.696969696969680 2001-06-01 4.682779456193340 2001-07-01 4.374057315233790 2001-08-01 3.427719821162460 2001-09-01 3.402366863905340 2001-10-01 4.011887072808340 2001-11-01 3.982300884955760 2001-12-01 5.014749262536890 2002-01-01 4.817518248175170 2002-02-01 4.221251819505080 2002-03-01 4.803493449781650 2002-04-01 4.782608695652160 2002-05-01 5.209840810419700 2002-06-01 5.483405483405490 2002-07-01 6.069364161849720 2002-08-01 5.619596541786730 2002-09-01 5.007153075822610 2002-10-01 4.857142857142860 2002-11-01 4.397163120567380 2002-12-01 3.511235955056170 2003-01-01 3.899721448467970 2003-02-01 4.469273743016760 2003-03-01 4.305555555555560 2003-04-01 4.702627939142470 2003-05-01 4.264099037138920 2003-06-01 3.967168262653900 2003-07-01 3.542234332425060 2003-08-01 3.819918144611190 2003-09-01 3.950953678474100 2003-10-01 3.950953678474100 2003-11-01 3.804347826086980 2003-12-01 3.799185888738130 2004-01-01 2.546916890080430 2004-02-01 2.673796791443850 2004-03-01 2.529960053262320 2004-04-01 1.849405548216630 2004-05-01 1.715039577836400 2004-06-01 1.842105263157900 2004-07-01 1.578947368421050 2004-08-01 1.445466491458610 2004-09-01 1.572739187418090 2004-10-01 1.703800786369580 2004-11-01 1.570680628272220 2004-12-01 1.699346405228760 2005-01-01 2.091503267973840 2005-02-01 1.692708333333320 2005-03-01 1.558441558441560 2005-04-01 1.945525291828800 2005-05-01 2.075226977950730 2005-06-01 1.808785529715760 2005-07-01 2.202072538860110 2005-08-01 2.202072538860110 2005-09-01 2.064516129032250 2005-10-01 1.932989690721650 2005-11-01 2.190721649484550 2005-12-01 2.056555269922880 2006-01-01 2.176696542893740 2006-02-01 2.432778489116530 2006-03-01 2.557544757033250 2006-04-01 2.162849872773540 2006-05-01 2.160101651842440 2006-06-01 2.284263959390850 2006-07-01 2.027883396704690 2006-08-01 2.154626108998720 2006-09-01 2.022756005056910 2006-10-01 2.402022756005070 2006-11-01 2.143757881462800 2006-12-01 1.889168765743070 2007-01-01 1.879699248120290 2007-02-01 1.750000000000000 2007-03-01 1.246882793017460 2007-04-01 1.245330012453300 2007-05-01 1.243781094527360 2007-06-01 1.116625310173710 2007-07-01 1.490683229813670 2007-08-01 1.488833746898260 2007-09-01 1.610904584882280 2007-10-01 1.481481481481480 2007-11-01 1.604938271604930 2007-12-01 2.101359703337440 2008-01-01 1.599015990159900 2008-02-01 1.719901719901710 2008-03-01 2.832512315270920 2008-04-01 2.829028290282910 2008-05-01 2.825552825552830 2008-06-01 2.822085889570540 2008-07-01 2.815177478580160 2008-08-01 2.933985330073370 2008-09-01 2.926829268292690 2008-10-01 2.798053527980520 2008-11-01 2.916160388821400 2008-12-01 2.784503631961280 2009-01-01 3.874092009685230 2009-02-01 3.743961352657020 2009-03-01 3.233532934131750 2009-04-01 3.349282296650730 2009-05-01 3.584229390680990 2009-06-01 3.699284009546560 2009-07-01 3.690476190476190 2009-08-01 3.325415676959610 2009-09-01 2.962085308056870 2009-10-01 2.840236686390550 2009-11-01 2.715466351829980 2009-12-01 2.473498233215540 2010-01-01 2.680652680652680 2010-02-01 3.259604190919660 2010-03-01 2.900232018561470 2010-04-01 2.777777777777770 2010-05-01 2.422145328719730 2010-06-01 2.301495972382050 2010-07-01 2.181400688863380 2010-08-01 2.643678160919540 2010-09-01 3.107019562715740 2010-10-01 3.337169159953960 2010-11-01 3.218390804597700 2010-12-01 3.218390804597700 2011-01-01 2.610669693530080 2011-02-01 2.142051860202920 2011-03-01 2.142051860202920 2011-04-01 2.139639639639640 2011-05-01 2.252252252252250 2011-06-01 2.249718785151850 2011-07-01 2.134831460674160 2011-08-01 2.015677491601330 2011-09-01 1.785714285714300 2011-10-01 1.447661469933170 2011-11-01 1.670378619153680 2011-12-01 1.781737193763920 2012-01-01 1.659292035398230 2012-02-01 1.545253863134670 2012-03-01 1.655629139072850 2012-04-01 1.653803748621830 2012-05-01 1.541850220264320 2012-06-01 1.540154015401540 2012-07-01 1.760176017601760 2012-08-01 1.427003293084540 2012-09-01 1.535087719298230 2012-10-01 1.866081229418220 2012-11-01 1.971522453450150 2012-12-01 1.859956236323840 2013-01-01 1.958650707290530 2013-02-01 2.173913043478260 2013-03-01 2.280130293159620 2013-04-01 2.277657266811270 2013-05-01 2.928416485900220 2013-06-01 3.033586132177670 2013-07-01 3.027027027027020 2013-08-01 3.463203463203450 2013-09-01 3.563714902807790 2013-10-01 3.556034482758620 2013-11-01 3.437164339419980 2013-12-01 3.544575725026870 2014-01-01 3.415154749199580 2014-02-01 3.191489361702120 2014-03-01 3.078556263269630 2014-04-01 3.181336161187700 2014-05-01 2.739726027397250 2014-06-01 2.628811777076760 2014-07-01 2.728226652675780 2014-08-01 2.510460251046030 2014-09-01 2.398331595411890 2014-10-01 2.289281997918840 2014-11-01 2.180685358255470 2014-12-01 2.178423236514510 2015-01-01 2.373581011351910 2015-02-01 2.371134020618560 2015-03-01 2.368692070030910 2015-04-01 2.466598150051390 2015-05-01 2.358974358974360 2015-06-01 2.459016393442630 2015-07-01 2.349336057201220 2015-08-01 2.346938775510200 2015-09-01 2.240325865580440 2015-10-01 2.339776195320450 2015-11-01 2.134146341463420 2015-12-01 2.030456852791890 2016-01-01 1.814516129032250 2016-02-01 1.711983887210480 2016-03-01 1.911468812877240 2016-04-01 1.805416248746250 2016-05-01 1.603206412825650 2016-06-01 1.800000000000000 2016-07-01 1.896207584830330 2016-08-01 1.694915254237300 2016-09-01 1.593625498007970 2016-10-01 1.590457256461230 2016-11-01 1.990049751243760 2016-12-01 1.990049751243760 2017-01-01 1.881188118811890 2017-02-01 2.079207920792070 2017-03-01 1.875616979269510 2017-04-01 1.773399014778300 2017-05-01 1.972386587771200 2017-06-01 1.669941060903720 2017-07-01 1.567091087169460 2017-08-01 1.764705882352940 2017-09-01 1.764705882352940 2017-10-01 1.663405088062630 2017-11-01 1.658536585365870 2017-12-01 1.658536585365870 2018-01-01 1.554907677356640 2018-02-01 1.551891367604290 2018-03-01 1.647286821705440 2018-04-01 1.548886737657330 2018-05-01 1.644100580270780 2018-06-01 1.739130434782610 2018-07-01 1.542912246865940 2018-08-01 1.445086705202300 2018-09-01 1.637764932562610 2018-10-01 1.636188642925880