Month Growth rate same period previous year 1981-01-01 32.83751045262790 1981-02-01 31.43317948119600 1981-03-01 30.62717274048050 1981-04-01 30.99415131226730 1981-05-01 31.36168601516010 1981-06-01 31.34814702232170 1981-07-01 30.64606288644910 1981-08-01 31.14875135116720 1981-09-01 32.01177698758520 1981-10-01 32.40697955630000 1981-11-01 32.59646322637130 1981-12-01 33.32019506393900 1982-01-01 33.54207161720430 1982-02-01 35.54489946838710 1982-03-01 38.68672234851370 1982-04-01 40.96091415063990 1982-05-01 44.60379680445550 1982-06-01 47.35453262028450 1982-07-01 52.68369993882010 1982-08-01 58.14405241024800 1982-09-01 61.82266913786870 1982-10-01 66.27775383435100 1982-11-01 70.25278016223870 1982-12-01 73.13922681541300 1983-01-01 77.55784479386640 1983-02-01 78.11910387772100 1983-03-01 77.99000603699130 1983-04-01 77.93137715231170 1983-05-01 75.72842944790200 1983-06-01 74.67497117055360 1983-07-01 70.88834277161700 1983-08-01 66.40657598691970 1983-09-01 63.81500714563580 1983-10-01 60.39591183655440 1983-11-01 58.83272352773640 1983-12-01 56.75233262864400 1984-01-01 54.41684231184330 1984-02-01 54.30286769806620 1984-03-01 52.41499645991290 1984-04-01 49.60307673466380 1984-05-01 47.72813185043260 1984-06-01 46.51735112849880 1984-07-01 45.57172657936690 1984-08-01 44.65347129994810 1984-09-01 43.79240098215000 1984-10-01 43.24474083408540 1984-11-01 41.77412423861890 1984-12-01 41.20770842175870 1985-01-01 41.22227386123300 1985-02-01 40.39617290659010 1985-03-01 41.21927092565880 1985-04-01 42.11182415250450 1985-05-01 42.68784131599480 1985-06-01 42.99937281809350 1985-07-01 44.59616152755670 1985-08-01 46.10311473879220 1985-09-01 47.81247709972630 1985-10-01 49.52099535139000 1985-11-01 53.87248335997380 1985-12-01 55.65229755365050 1986-01-01 57.46038367839400 1986-02-01 59.20219174808680 1986-03-01 59.37765886219190 1986-04-01 60.68791940629800 1986-05-01 61.66927955241420 1986-06-01 64.52484644473260 1986-07-01 64.09837327329820 1986-08-01 64.34644974535590 1986-09-01 65.36632944446460 1986-10-01 67.09230865716450 1986-11-01 65.04640364411170 1986-12-01 69.59170329270820 1987-01-01 70.72853301173920 1987-02-01 68.74817346923000 1987-03-01 71.80141811296300 1987-04-01 74.02517628375020 1987-05-01 75.94710092556140 1987-06-01 76.75682897799620 1987-07-01 78.14329566086720 1987-08-01 81.21568320970960 1987-09-01 82.97832395336270 1987-10-01 84.58204884280240 1987-11-01 91.02154968905170 1987-12-01 94.19856880756940 1988-01-01 97.24405496505270 1988-02-01 106.41696505219700 1988-03-01 116.45545258739800 1988-04-01 123.94492296839300 1988-05-01 133.69339139446200 1988-06-01 138.43865444068500 1988-07-01 144.89132001487100 1988-08-01 146.46063146370400 1988-09-01 147.43514412242300 1988-10-01 147.78427281327800 1988-11-01 140.19239091831400 1988-12-01 132.50695976866600 1989-01-01 129.91161955130600 1989-02-01 123.14324135642000 1989-03-01 108.86231748279800 1989-04-01 97.57363401203530 1989-05-01 87.15804292088250 1989-06-01 80.06898453314230 1989-07-01 73.56768035264860 1989-08-01 68.63204412613190 1989-09-01 65.25169617983900 1989-10-01 61.28814549206990 1989-11-01 59.10373524410340 1989-12-01 56.47344886705520 1990-01-01 53.00753454737760 1990-02-01 49.95938828240150 1990-03-01 49.07245885816620 1990-04-01 49.74972351419230 1990-05-01 49.04970540832440 1990-06-01 48.97451635073750 1990-07-01 48.80762250048590 1990-08-01 48.42035721597510 1990-09-01 47.16642597545760 1990-10-01 46.39204287766980 1990-11-01 45.80890414707920 1990-12-01 45.26372542958040 1991-01-01 44.22231846453800 1991-02-01 43.43012487297940 1991-03-01 42.01325985357020 1991-04-01 39.45038408422800 1991-05-01 37.13646573014270 1991-06-01 34.57808840841050 1991-07-01 31.90279382576810 1991-08-01 29.44938243301610 1991-09-01 27.36561723445790 1991-10-01 25.60645158380670 1991-11-01 23.85362284911000 1991-12-01 22.62582125608900 1992-01-01 21.89226999332640 1992-02-01 20.88951289132150 1992-03-01 19.86320044665480 1992-04-01 19.16852084805160 1992-05-01 18.80431541734570 1992-06-01 18.63271774975230 1992-07-01 18.37760959789070 1992-08-01 18.23801893717020 1992-09-01 17.75554250385420 1992-10-01 17.00161891035930 1992-11-01 16.14081786710020 1992-12-01 14.51916974481160 1993-01-01 12.80971333649480 1993-02-01 11.95200319845360 1993-03-01 11.46218542790860 1993-04-01 11.14102697028550 1993-05-01 10.63178850174590 1993-06-01 10.07766584650690 1993-07-01 9.63796997375480 1993-08-01 9.12546203757864 1993-09-01 8.68431360469563 1993-10-01 8.51203793601844 1993-11-01 8.27154185103629 1993-12-01 8.24795142656798 1994-01-01 8.06357292573024 1994-02-01 7.85108716726411 1994-03-01 7.59669217271812 1994-04-01 7.43881775520833 1994-05-01 7.38576247411598 1994-06-01 7.37030803942964 1994-07-01 7.24318690830592 1994-08-01 7.18605850611212 1994-09-01 7.17279666116677 1994-10-01 7.04967478775796 1994-11-01 6.94283211971231 1994-12-01 6.92611647507098 1995-01-01 8.92828274590129 1995-02-01 12.22901615589070 1995-03-01 15.42675213537280 1995-04-01 19.23285668944530 1995-05-01 25.08975312971110 1995-06-01 29.98475646600160 1995-07-01 33.51466498987140 1995-08-01 35.95540270012840 1995-09-01 38.03688751172790 1995-10-01 40.02170968313790 1995-11-01 41.76000141288860 1995-12-01 43.75024872322820 1996-01-01 42.90342439058630 1996-02-01 40.21929507892780 1996-03-01 37.93754079645930 1996-04-01 35.05101262828740 1996-05-01 30.27260147013330 1996-06-01 26.74331743034420 1996-07-01 24.86366723586240 1996-08-01 24.12186014258810 1996-09-01 23.67155979897290 1996-10-01 22.98654418656650 1996-11-01 22.53947411042160 1996-12-01 21.98911777066800 1997-01-01 21.93482526960890 1997-02-01 21.80022638725220 1997-03-01 21.51796784124950 1997-04-01 21.01138214627010 1997-05-01 20.49311956235510 1997-06-01 20.17985174581580 1997-07-01 19.56313929103460 1997-08-01 18.74298540745220 1997-09-01 18.02253611627320 1997-10-01 17.60077204692720 1997-11-01 17.46319072425710 1997-12-01 17.28874489365900 1998-01-01 16.61411501028750 1998-02-01 16.30667006662360 1998-03-01 16.07806008207830 1998-04-01 15.91617323709910 1998-05-01 15.73648812450720 1998-06-01 15.49051530096730 1998-07-01 15.29782128837260 1998-08-01 15.45640793080340 1998-09-01 15.83355798529970 1998-10-01 16.14403773849760 1998-11-01 16.01624574084840 1998-12-01 15.80077570929020 1999-01-01 15.55380476350870 1999-02-01 15.26125811486670 1999-03-01 15.01703855319130 1999-04-01 14.89257791305240 1999-05-01 14.89228835224000 1999-06-01 14.90734618728860 1999-07-01 14.74511776720010 1999-08-01 14.45232136173770 1999-09-01 13.92098704005860 1999-10-01 13.51204462182910 1999-11-01 13.04212890974200 1999-12-01 12.32630521685840 2000-01-01 11.86342897051350 2000-02-01 11.26835759368660 2000-03-01 10.61678781386350 2000-04-01 10.10751766914760 2000-05-01 9.44362849744693 2000-06-01 8.74872373700780 2000-07-01 8.26081371623851 2000-08-01 7.68599899476886 2000-09-01 7.16901523951578 2000-10-01 6.75729428728681 2000-11-01 6.55462861321420 2000-12-01 6.27372691536337 2001-01-01 5.97813737432710 2001-02-01 5.82451266546083 2001-03-01 5.80990306115503 2001-04-01 5.67859432102586 2001-05-01 5.59788102502416 2001-06-01 5.49522155009342 2001-07-01 5.52704386473453 2001-08-01 5.67474048580821 2001-09-01 5.88506433136378 2001-10-01 5.93387865145648 2001-11-01 5.94495804600162 2001-12-01 6.02859811427704 2002-01-01 6.09522448737704 2002-02-01 6.59991744254112 2002-03-01 6.76834727214812 2002-04-01 7.12595601303306 2002-05-01 7.25140425549804 2002-06-01 7.45017167489736 2002-07-01 7.55827985198905 2002-08-01 7.61400752728057 2002-09-01 7.63806865084659 2002-10-01 7.60381807239377 2002-11-01 7.57938612487872 2002-12-01 7.41260152651470 2003-01-01 7.25090360179739 2003-02-01 6.59136824284430 2003-03-01 6.32589546519298 2003-04-01 5.89621876937238 2003-05-01 5.65403192398938 2003-06-01 5.42618480068686 2003-07-01 5.20716545818567 2003-08-01 5.07929268332643 2003-09-01 4.87619724841984 2003-10-01 4.74442885434041 2003-11-01 4.61215216171050 2003-12-01 4.54020777562784 2004-01-01 4.26256054251856 2004-02-01 4.16759193905084 2004-03-01 4.04739587899948 2004-04-01 4.03356352838962 2004-05-01 4.04124754398498 2004-06-01 3.95287721655093 2004-07-01 3.94392213736534 2004-08-01 3.78691023411894 2004-09-01 3.69486028406252 2004-10-01 3.53603012746808 2004-11-01 3.45829401948525 2004-12-01 3.37164501069099 2005-01-01 3.42473715692303 2005-02-01 3.35945572926312 2005-03-01 3.28197547228346 2005-04-01 3.20872848095787 2005-05-01 3.03853085571078 2005-06-01 2.98518380120562 2005-07-01 2.92579125567164 2005-08-01 2.91053391971028 2005-09-01 2.88782318925529 2005-10-01 2.97868682147068 2005-11-01 3.01041092676416 2005-12-01 3.01559401585125 2006-01-01 3.02538463209295 2006-02-01 2.98437865025458 2006-03-01 3.08196045946973 2006-04-01 3.16249610066192 2006-05-01 3.24003596694961 2006-06-01 3.30526418598791 2006-07-01 3.24238654818755 2006-08-01 3.25048476504271 2006-09-01 3.26714744713339 2006-10-01 3.18995171274817 2006-11-01 3.15778863485569 2006-12-01 3.18719347913892 2007-01-01 3.21322121049174 2007-02-01 3.24402221896599 2007-03-01 3.21502805031107 2007-04-01 3.11743341826204 2007-05-01 3.05988263747441 2007-06-01 2.95845274873814 2007-07-01 2.98061378088791 2007-08-01 3.00184808183900 2007-09-01 2.95559357344002 2007-10-01 2.90315988474162 2007-11-01 2.91922114002388 2007-12-01 2.90897836062620 2008-01-01 2.89628345700221 2008-02-01 2.92280768590955 2008-03-01 2.90551505561177 2008-04-01 2.88146253528970 2008-05-01 2.87323143095339 2008-06-01 2.88638109982713 2008-07-01 2.87977081515427 2008-08-01 2.87241510701659 2008-09-01 2.96480767829850 2008-10-01 3.29953124992175 2008-11-01 3.40155711979018 2008-12-01 3.48348076253033 2009-01-01 3.50262984682486 2009-02-01 3.61664467255012 2009-03-01 3.70185767704359 2009-04-01 3.55148719052576 2009-05-01 3.54084146722984 2009-06-01 3.52338920305979 2009-07-01 3.49045226247729 2009-08-01 3.37156676001717 2009-09-01 3.25531417932653 2009-10-01 2.93980999315630 2009-11-01 2.79580967945388 2009-12-01 2.69098465727704 2010-01-01 2.59246320106638 2010-02-01 2.42157751255728 2010-03-01 2.26096205439484 2010-04-01 2.33945748516634 2010-05-01 2.37501423726390 2010-06-01 2.36942126047634 2010-07-01 2.36763681515036 2010-08-01 2.41798156102750 2010-09-01 2.38799570882204 2010-10-01 2.31269648582151 2010-11-01 2.26964677712093 2010-12-01 2.25486661260126 2011-01-01 2.23281854487638 2011-02-01 2.18352776034667 2011-03-01 2.17592777638802 2011-04-01 2.17878034604171 2011-05-01 2.11491260635733 2011-06-01 2.07126917634302 2011-07-01 1.96747781442468 2011-08-01 1.86754197414838 2011-09-01 1.84328645337900 2011-10-01 1.89372692664839 2011-11-01 1.89827360638668 2011-12-01 1.87805825416263 2012-01-01 1.85701706384599 2012-02-01 1.84358856634251 2012-03-01 1.83097116747526 2012-04-01 1.80993578827023 2012-05-01 1.78449230367260 2012-06-01 1.76193066936539 2012-07-01 1.82471000758629 2012-08-01 1.86361277204149 2012-09-01 1.90806518589738 2012-10-01 1.92300023292755 2012-11-01 1.95541510802639 2012-12-01 1.99737160937722 2013-01-01 2.04316537207522 2013-02-01 2.04770392183773 2013-03-01 2.01076505720254 2013-04-01 2.02614645175421 2013-05-01 2.08162062272899 2013-06-01 2.17317709659838 2013-07-01 2.20480830048507 2013-08-01 2.27751420628836 2013-09-01 2.21391122315528 2013-10-01 2.18361034144419 2013-11-01 2.18845580109078 2013-12-01 2.17783519470636 2014-01-01 2.12719702446790 2014-02-01 2.12787807516350 2014-03-01 2.11800914485241 2014-04-01 2.10042649126299 2014-05-01 2.07637817867037 2014-06-01 2.01020980495039 2014-07-01 1.95536082604983 2014-08-01 1.93319018734296 2014-09-01 1.99008419277420 2014-10-01 2.01775071844801 2014-11-01 2.01141878826596 2014-12-01 2.04111002790262 2015-01-01 2.07666436135900 2015-02-01 2.07637042641010 2015-03-01 2.09312442522638 2015-04-01 2.15248600163610 2015-05-01 2.12410259135718 2015-06-01 2.11417088823508 2015-07-01 2.13936264357278 2015-08-01 2.11466493553142 2015-09-01 2.08173413346856 2015-10-01 2.03602247116577 2015-11-01 2.02974872853784 2015-12-01 2.03859364883339 2016-01-01 2.06029286270931 2016-02-01 2.11487769864286 2016-03-01 2.17730048943089 2016-04-01 2.15345363428810 2016-05-01 2.19253281946176 2016-06-01 2.21049559584345 2016-07-01 2.25257281578969 2016-08-01 2.26259084218303 2016-09-01 2.25060372049807 2016-10-01 2.30669439637118 2016-11-01 2.33349391665702 2016-12-01 2.35978429973053 2017-01-01 2.41787121063071 2017-02-01 2.42296963353053 2017-03-01 2.41470157972152 2017-04-01 2.42728518278431 2017-05-01 2.43749324237228 2017-06-01 2.43865058088468 2017-07-01 2.42941211084635 2017-08-01 2.48283854858056 2017-09-01 2.47984872195529 2017-10-01 2.50446124212374 2017-11-01 2.52935909676638 2017-12-01 2.49182770634979 2018-01-01 2.47050091214493 2018-02-01 2.41893135485804 2018-03-01 2.41718578300594 2018-04-01 2.44702663005835 2018-05-01 2.46627572262518 2018-06-01 2.52706566739361 2018-07-01 2.55450204071185 2018-08-01 2.50745472715728 2018-09-01 2.58137236587583 2018-10-01 2.54480064596060