Month Percent 1968-01-01 49.1474423269809 1968-02-01 48.3935742971888 1968-03-01 53.0653266331658 1968-04-01 56.2814070351759 1968-05-01 57.5879396984925 1968-06-01 55.6224899598394 1968-07-01 55.2208835341366 1968-08-01 56.1368209255533 1968-09-01 53.9778449144008 1968-10-01 52.8225806451613 1968-11-01 51.8668012108981 1968-12-01 50.5549949545913 1969-01-01 49.0890688259109 1969-02-01 47.6190476190476 1969-03-01 52.5835866261398 1969-04-01 54.4715447154472 1969-05-01 56.2563580874873 1969-06-01 55.0356052899288 1969-07-01 55.1934826883910 1969-08-01 55.1478083588175 1969-09-01 54.4806517311609 1969-10-01 53.0549898167006 1969-11-01 51.3761467889908 1969-12-01 50.1018329938900 1970-01-01 48.5743380855397 1970-02-01 49.4393476044852 1970-03-01 53.7678207739308 1970-04-01 54.9898167006110 1970-05-01 55.2953156822811 1970-06-01 55.2845528455284 1970-07-01 55.6459816887080 1970-08-01 55.0253807106599 1970-09-01 55.0151975683891 1970-10-01 53.7993920972644 1970-11-01 52.6849037487335 1970-12-01 52.6794742163802 1971-01-01 50.2522704339051 1971-02-01 49.5459132189707 1971-03-01 55.4325955734406 1971-04-01 56.3819095477387 1971-05-01 54.9648946840522 1971-06-01 55.1758793969849 1971-07-01 55.0753768844221 1971-08-01 53.6757301107754 1971-09-01 52.4722502522704 1971-10-01 52.0242914979757 1971-11-01 50.6085192697769 1971-12-01 49.3902439024390 1972-01-01 48.6707566462168 1972-02-01 49.0663900414938 1972-03-01 52.1376433785193 1972-04-01 51.9371727748691 1972-05-01 52.2012578616352 1972-06-01 51.2118018967334 1972-07-01 51.3626834381551 1972-08-01 51.1041009463722 1972-09-01 50.3695881731785 1972-10-01 50.4192872117400 1972-11-01 50.6849315068493 1972-12-01 49.6828752642706 1973-01-01 49.4680851063830 1973-02-01 48.5561497326203 1973-03-01 51.1278195488722 1973-04-01 51.2405609492988 1973-05-01 50.7042253521127 1973-06-01 52.0652173913044 1973-07-01 51.4192139737991 1973-08-01 49.6174863387978 1973-09-01 51.3157894736842 1973-10-01 50.9911894273128 1973-11-01 48.9479512735327 1973-12-01 46.7849223946785 1974-01-01 44.0848214285714 1974-02-01 44.5190156599553 1974-03-01 47.1316085489314 1974-04-01 49.0395480225989 1974-05-01 49.8301245753114 1974-06-01 48.4126984126984 1974-07-01 47.0857142857143 1974-08-01 47.4828375286041 1974-09-01 48.3870967741936 1974-10-01 48.3236994219653 1974-11-01 46.2165308498254 1974-12-01 44.9122807017544 1975-01-01 43.5597189695550 1975-02-01 43.0082256169213 1975-03-01 45.2830188679245 1975-04-01 47.1074380165289 1975-05-01 48.1087470449173 1975-06-01 47.2748815165877 1975-07-01 46.8973747016706 1975-08-01 46.7780429594272 1975-09-01 46.0526315789474 1975-10-01 45.5635491606715 1975-11-01 43.8554216867470 1975-12-01 44.4444444444444 1976-01-01 42.4242424242424 1976-02-01 41.9001218026797 1976-03-01 45.6654456654457 1976-04-01 46.4547677261614 1976-05-01 45.5324357405141 1976-06-01 43.8725490196078 1976-07-01 45.6334563345634 1976-08-01 45.4433497536946 1976-09-01 44.2663378545006 1976-10-01 43.8271604938272 1976-11-01 43.4405940594059 1976-12-01 43.3540372670808 1977-01-01 41.8430884184309 1977-02-01 41.9475655430712 1977-03-01 44.3053817271589 1977-04-01 47.6787954830615 1977-05-01 47.1698113207547 1977-06-01 45.9119496855346 1977-07-01 47.0365699873897 1977-08-01 45.5233291298865 1977-09-01 44.3742098609355 1977-10-01 43.4892541087231 1977-11-01 43.9949431099874 1977-12-01 44.4162436548223 1978-01-01 41.9191919191919 1978-02-01 41.2878787878788 1978-03-01 43.9949431099874 1978-04-01 46.0759493670886 1978-05-01 46.6498103666245 1978-06-01 47.4683544303798 1978-07-01 47.0886075949367 1978-08-01 46.2610899873257 1978-09-01 44.7969543147208 1978-10-01 43.8529784537389 1978-11-01 42.9657794676806 1978-12-01 43.3290978398983 1979-01-01 42.1119592875318 1979-02-01 41.4012738853503 1979-03-01 43.5668789808917 1979-04-01 45.8015267175572 1979-05-01 46.3104325699746 1979-06-01 46.0559796437659 1979-07-01 46.0559796437659 1979-08-01 46.4376590330789 1979-09-01 45.7324840764331 1979-10-01 44.0914866581957 1979-11-01 43.0203045685279 1979-12-01 41.5716096324461 1980-01-01 39.9491094147583 1980-02-01 39.2356687898089 1980-03-01 41.4758269720102 1980-04-01 43.8373570520966 1980-05-01 45.7433290978399 1980-06-01 46.5145754119138 1980-07-01 47.3350253807107 1980-08-01 47.0290771175727 1980-09-01 46.0858585858586 1980-10-01 44.2477876106195 1980-11-01 43.4508816120907 1980-12-01 42.6952141057935 1981-01-01 41.2878787878788 1981-02-01 40.5576679340938 1981-03-01 42.5126903553300 1981-04-01 45.8703939008895 1981-05-01 46.1146496815287 1981-06-01 46.7515923566879 1981-07-01 46.2227912932138 1981-08-01 45.4661558109834 1981-09-01 44.1176470588235 1981-10-01 42.8388746803069 1981-11-01 42.7656850192061 1981-12-01 42.6923076923077 1982-01-01 40.7928388746803 1982-02-01 39.9234693877551 1982-03-01 42.2391857506361 1982-04-01 44.5431472081218 1982-05-01 45.1898734177215 1982-06-01 45.5120101137800 1982-07-01 45.6962025316456 1982-08-01 44.7236180904523 1982-09-01 43.6090225563910 1982-10-01 43.4292866082603 1982-11-01 43.8750000000000 1982-12-01 43.3208489388265 1983-01-01 41.0736579275905 1983-02-01 41.3233458177278 1983-03-01 44.2643391521197 1983-04-01 47.0734744707347 1983-05-01 47.0149253731343 1983-06-01 46.5838509316770 1983-07-01 46.4019851116625 1983-08-01 45.4207920792079 1983-09-01 44.3757725587145 1983-10-01 43.7731196054254 1983-11-01 43.7192118226601 1983-12-01 43.0332922318126 1984-01-01 41.0824108241082 1984-02-01 40.3205918618989 1984-03-01 42.6814268142681 1984-04-01 45.7002457002457 1984-05-01 46.2576687116564 1984-06-01 46.5770171149144 1984-07-01 46.7564259485924 1984-08-01 46.3980463980464 1984-09-01 45.6760048721072 1984-10-01 44.5255474452555 1984-11-01 43.3939393939394 1984-12-01 43.0992736077482 1985-01-01 42.1818181818182 1985-02-01 41.4545454545455 1985-03-01 42.7184466019418 1985-04-01 44.4981862152358 1985-05-01 44.5652173913044 1985-06-01 44.3373493975904 1985-07-01 44.8856799037304 1985-08-01 44.1916167664671 1985-09-01 43.5406698564593 1985-10-01 43.3174224343675 1985-11-01 43.0274135876043 1985-12-01 42.1930870083433 1986-01-01 42.5683709869203 1986-02-01 41.4489311163896 1986-03-01 43.3649289099526 1986-04-01 45.3254437869822 1986-05-01 44.7867298578199 1986-06-01 45.1536643026005 1986-07-01 45.9363957597173 1986-08-01 45.1348182883939 1986-09-01 43.8739789964994 1986-10-01 43.1897555296857 1986-11-01 42.8571428571429 1986-12-01 42.1602787456446 1987-01-01 41.1560693641618 1987-02-01 40.2085747392816 1987-03-01 42.0809248554913 1987-04-01 44.4572748267898 1987-05-01 45.5594002306805 1987-06-01 44.9425287356322 1987-07-01 44.0872560275545 1987-08-01 44.5080091533181 1987-09-01 43.8996579247434 1987-10-01 42.7437641723356 1987-11-01 42.8733031674208 1987-12-01 42.5339366515837 1988-01-01 40.9706546275395 1988-02-01 40.0226757369615 1988-03-01 42.4858757062147 1988-04-01 44.9324324324324 1988-05-01 45.5156950672646 1988-06-01 44.6808510638298 1988-07-01 44.5566778900112 1988-08-01 44.4692737430168 1988-09-01 43.6666666666667 1988-10-01 43.2852386237514 1988-11-01 42.7937915742794 1988-12-01 42.4778761061947 1989-01-01 41.1049723756906 1989-02-01 41.0199556541020 1989-03-01 43.0939226519337 1989-04-01 45.6449834619625 1989-05-01 46.5346534653465 1989-06-01 46.9230769230769 1989-07-01 46.1962513781698 1989-08-01 45.0657894736842 1989-09-01 44.1657579062159 1989-10-01 43.9476553980371 1989-11-01 43.5729847494553 1989-12-01 43.1372549019608 1990-01-01 40.7650273224044 1990-02-01 40.7894736842105 1990-03-01 43.9344262295082 1990-04-01 46.4052287581699 1990-05-01 47.1739130434783 1990-06-01 46.7969598262758 1990-07-01 46.5648854961832 1990-08-01 46.0784313725490 1990-09-01 45.3362255965293 1990-10-01 45.4446854663774 1990-11-01 45.4842219804135 1990-12-01 44.3960826985854 1991-01-01 41.9284940411701 1991-02-01 42.5000000000000 1991-03-01 43.8311688311688 1991-04-01 47.7467811158798 1991-05-01 49.0364025695932 1991-06-01 47.9144385026738 1991-07-01 47.4812433011790 1991-08-01 47.0149253731343 1991-09-01 45.7537154989384 1991-10-01 45.4931071049841 1991-11-01 45.7627118644068 1991-12-01 46.4968152866242 1992-01-01 43.5244161358811 1992-02-01 43.1769722814499 1992-03-01 45.7264957264957 1992-04-01 48.4978540772532 1992-05-01 50.3205128205128 1992-06-01 48.6659551760939 1992-07-01 47.4812433011790 1992-08-01 47.7005347593583 1992-09-01 46.1538461538462 1992-10-01 45.7264957264957 1992-11-01 45.5709711846318 1992-12-01 46.0385438972163 1993-01-01 43.8370846730975 1993-02-01 42.8417653390743 1993-03-01 44.8497854077253 1993-04-01 48.7124463519313 1993-05-01 48.5530546623794 1993-06-01 48.7674169346195 1993-07-01 48.5468245425188 1993-08-01 47.6344086021505 1993-09-01 46.9892473118280 1993-10-01 46.7741935483871 1993-11-01 46.6165413533835 1993-12-01 46.3939720129171 1994-01-01 43.6893203883495 1994-02-01 44.1910966340934 1994-03-01 47.2372697724810 1994-04-01 49.3492407809111 1994-05-01 49.2942453854506 1994-06-01 48.4815618221258 1994-07-01 48.3624454148472 1994-08-01 48.1481481481481 1994-09-01 47.3340587595212 1994-10-01 46.7320261437908 1994-11-01 46.6739367502726 1994-12-01 47.4316939890710 1995-01-01 44.8577680525164 1995-02-01 44.7136563876652 1995-03-01 47.1947194719472 1995-04-01 48.5682819383260 1995-05-01 48.6784140969163 1995-06-01 48.6218302094818 1995-07-01 48.6666666666667 1995-08-01 47.8888888888889 1995-09-01 47.2222222222222 1995-10-01 46.7777777777778 1995-11-01 47.1111111111111 1995-12-01 47.1046770601336 1996-01-01 44.9162011173184 1996-02-01 45.0450450450450 1996-03-01 47.2440944881890 1996-04-01 48.9313835770529 1996-05-01 49.8312710911136 1996-06-01 50.7882882882883 1996-07-01 50.2844141069397 1996-08-01 48.8054607508532 1996-09-01 47.7866061293984 1996-10-01 46.5301478953356 1996-11-01 46.0661345496009 1996-12-01 45.3089244851259 1997-01-01 44.3807339449541 1997-02-01 45.3810623556582 1997-03-01 46.4821222606690 1997-04-01 48.7889273356401 1997-05-01 49.3641618497110 1997-06-01 49.3055555555556 1997-07-01 49.3582263710618 1997-08-01 49.1228070175439 1997-09-01 48.6013986013986 1997-10-01 47.4299065420561 1997-11-01 46.8384074941452 1997-12-01 46.7685076380729 1998-01-01 46.2264150943396 1998-02-01 45.4869358669834 1998-03-01 46.7378410438909 1998-04-01 49.8815165876777 1998-05-01 50.2375296912114 1998-06-01 49.1666666666667 1998-07-01 49.3397358943577 1998-08-01 49.2178098676294 1998-09-01 46.8750000000000 1998-10-01 45.9036144578313 1998-11-01 46.7391304347826 1998-12-01 47.0944309927361 1999-01-01 45.0789793438639 1999-02-01 44.4308445532436 1999-03-01 47.0085470085470 1999-04-01 49.2665036674817 1999-05-01 50.1840490797546 1999-06-01 48.5257985257985 1999-07-01 48.0198019801980 1999-08-01 47.8314745972739 1999-09-01 46.1538461538462 1999-10-01 45.5223880597015 1999-11-01 44.9564134495641 1999-12-01 45.3865336658354 2000-01-01 44.0401505646173 2000-02-01 43.8131313131313 2000-03-01 46.6582597730139 2000-04-01 48.6759142496847 2000-05-01 48.1668773704172 2000-06-01 47.5347661188369 2000-07-01 47.8316326530612 2000-08-01 46.6155810983397 2000-09-01 47.0663265306122 2000-10-01 47.8260869565217 2000-11-01 46.6751918158568 2000-12-01 46.7948717948718 2001-01-01 44.6589446589447 2001-02-01 44.4876783398184 2001-03-01 47.0817120622568 2001-04-01 48.3160621761658 2001-05-01 48.7678339818418 2001-06-01 47.4025974025974 2001-07-01 47.3132372214941 2001-08-01 47.3753280839895 2001-09-01 45.7404980340760 2001-10-01 45.5978975032852 2001-11-01 45.5263157894737 2001-12-01 44.7368421052632 2002-01-01 43.4262948207171 2002-02-01 41.8449197860963 2002-03-01 44.0745672436751 2002-04-01 46.6755319148936 2002-05-01 46.9333333333333 2002-06-01 46.5240641711230 2002-07-01 46.2987886944818 2002-08-01 46.5587044534413 2002-09-01 45.1482479784367 2002-10-01 44.2645074224022 2002-11-01 43.7077131258457 2002-12-01 43.7669376693767 2003-01-01 42.2554347826087 2003-02-01 41.7236662106703 2003-03-01 43.5020519835841 2003-04-01 45.9016393442623 2003-05-01 46.0382513661202 2003-06-01 46.5753424657534 2003-07-01 46.5469613259668 2003-08-01 45.7814661134163 2003-09-01 44.9655172413793 2003-10-01 43.2918395573997 2003-11-01 43.5684647302905 2003-12-01 44.3828016643551 2004-01-01 42.2005571030641 2004-02-01 41.9354838709677 2004-03-01 43.8547486033520 2004-04-01 44.9720670391061 2004-05-01 45.7983193277311 2004-06-01 45.5056179775281 2004-07-01 46.0451977401130 2004-08-01 46.1756373937677 2004-09-01 45.3900709219858 2004-10-01 44.4602272727273 2004-11-01 43.5277382645804 2004-12-01 43.0813124108417 2005-01-01 41.9170243204578 2005-02-01 42.0143884892086 2005-03-01 44.4604316546763 2005-04-01 46.6954022988506 2005-05-01 47.8448275862069 2005-06-01 46.8299711815562 2005-07-01 46.1538461538462 2005-08-01 46.6569767441860 2005-09-01 45.2830188679245 2005-10-01 45.2034883720930 2005-11-01 44.1690962099125 2005-12-01 43.8775510204082 2006-01-01 43.1085043988270 2006-02-01 42.4153166421208 2006-03-01 44.3465491923642 2006-04-01 46.3235294117647 2006-05-01 46.9808541973490 2006-06-01 48.2300884955752 2006-07-01 48.1426448736998 2006-08-01 45.4545454545455 2006-09-01 44.4940476190476 2006-10-01 45.3869047619048 2006-11-01 44.9404761904762 2006-12-01 42.9850746268657 2007-01-01 41.8674698795181 2007-02-01 42.7492447129909 2007-03-01 44.4947209653092 2007-04-01 47.6621417797888 2007-05-01 46.8181818181818 2007-06-01 46.6767371601208 2007-07-01 45.8270106221548 2007-08-01 44.7488584474886 2007-09-01 44.2748091603053 2007-10-01 43.6641221374046 2007-11-01 43.8837920489297 2007-12-01 43.8837920489297 2008-01-01 42.7914110429448 2008-02-01 42.7692307692308 2008-03-01 44.4615384615385 2008-04-01 48.4567901234568 2008-05-01 47.2222222222222 2008-06-01 46.3678516228748 2008-07-01 43.8759689922481 2008-08-01 44.5482866043614 2008-09-01 44.3925233644860 2008-10-01 43.0577223088924 2008-11-01 44.0625000000000 2008-12-01 43.9062500000000 2009-01-01 42.4764890282132 2009-02-01 42.2955974842767 2009-03-01 43.0141287284144 2009-04-01 47.6415094339623 2009-05-01 47.1608832807571 2009-06-01 46.6876971608833 2009-07-01 45.5696202531646 2009-08-01 44.6031746031746 2009-09-01 44.5151033386328 2009-10-01 42.7662957074722 2009-11-01 44.5859872611465 2009-12-01 43.8596491228070 2010-01-01 41.6000000000000 2010-02-01 41.2520064205458 2010-03-01 42.6282051282051 2010-04-01 44.8553054662379 2010-05-01 45.3376205787781 2010-06-01 45.4983922829582 2010-07-01 43.9418416801292 2010-08-01 43.5980551053485 2010-09-01 43.9935064935065 2010-10-01 43.0194805194805 2010-11-01 44.5528455284553 2010-12-01 44.2088091353997 2011-01-01 42.4143556280587 2011-02-01 42.3895253682488 2011-03-01 43.2885906040268 2011-04-01 45.9731543624161 2011-05-01 46.3087248322148 2011-06-01 45.5462184873950 2011-07-01 44.3697478991597 2011-08-01 43.8030560271647 2011-09-01 42.1487603305785 2011-10-01 41.0891089108911 2011-11-01 41.9141914191419 2011-12-01 41.3223140495868 2012-01-01 38.6776859504132 2012-02-01 39.8009950248756 2012-03-01 39.8009950248756 2012-04-01 44.6102819237148 2012-05-01 42.8571428571429 2012-06-01 42.8571428571429 2012-07-01 44.1860465116279 2012-08-01 44.3333333333333 2012-09-01 42.5000000000000 2012-10-01 42.0701168614357 2012-11-01 41.5692821368948 2012-12-01 40.7345575959933 2013-01-01 40.2337228714524 2013-02-01 40.7718120805369 2013-03-01 41.2060301507538 2013-04-01 46.0636515912898 2013-05-01 44.9664429530201 2013-06-01 43.5510887772194 2013-07-01 43.5510887772194 2013-08-01 43.6762225969646 2013-09-01 43.4563758389262 2013-10-01 43.3613445378151 2013-11-01 43.6026936026936 2013-12-01 43.4343434343434 2014-01-01 40.5723905723906 2014-02-01 41.2162162162162 2014-03-01 42.3986486486486 2014-04-01 44.3507588532884 2014-05-01 44.9494949494950 2014-06-01 44.9324324324324 2014-07-01 44.8566610455312 2014-08-01 43.4856175972927 2014-09-01 43.4856175972927 2014-10-01 42.1319796954315 2014-11-01 42.4703891708968 2014-12-01 44.0677966101695 2015-01-01 40.7783417935702 2015-02-01 39.3220338983051 2015-03-01 39.8305084745763 2015-04-01 45.5160744500846 2015-05-01 44.9152542372881 2015-06-01 44.9324324324324 2015-07-01 44.0677966101695 2015-08-01 42.8571428571429 2015-09-01 43.2203389830508 2015-10-01 42.7118644067797 2015-11-01 43.0508474576271 2015-12-01 43.8240270727580 2016-01-01 43.7288135593220 2016-02-01 42.2750424448217 2016-03-01 42.3728813559322 2016-04-01 45.5932203389830 2016-05-01 44.6700507614213 2016-06-01 46.1148648648649 2016-07-01 45.6852791878173 2016-08-01 46.1016949152542 2016-09-01 45.5160744500846 2016-10-01 44.8392554991540 2016-11-01 43.5593220338983 2016-12-01 44.2372881355932 2017-01-01 43.6762225969646 2017-02-01 42.5675675675676 2017-03-01 41.7229729729730 2017-04-01 46.2057335581788 2017-05-01 46.1279461279461 2017-06-01 47.0489038785835 2017-07-01 47.0489038785835 2017-08-01 46.6216216216216 2017-09-01 45.9595959595960 2017-10-01 45.0252951096121 2017-11-01 43.7710437710438 2017-12-01 44.6880269814502 2018-01-01 45.5311973018550 2018-02-01 46.2837837837838 2018-03-01 47.3861720067454 2018-04-01 48.9898989898990 2018-05-01 48.9898989898990 2018-06-01 50.2521008403361 2018-07-01 50.7563025210084 2018-08-01 49.6621621621622 2018-09-01 47.8920741989882