Month Percent 1968-01-01 51.4955134596211 1968-02-01 51.0224438902743 1968-03-01 55.9102244389027 1968-04-01 58.2543640897756 1968-05-01 59.1724825523430 1968-06-01 58.4745762711864 1968-07-01 58.3956153462880 1968-08-01 58.0049875311721 1968-09-01 56.0439560439560 1968-10-01 55.7221389305347 1968-11-01 54.6773386693347 1968-12-01 53.2064128256513 1969-01-01 51.4300050175615 1969-02-01 50.3514056224900 1969-03-01 55.0025138260432 1969-04-01 56.8765743073048 1969-05-01 57.8416540595058 1969-06-01 57.2869389813414 1969-07-01 57.6612903225806 1969-08-01 56.8330811901160 1969-09-01 55.7236510337872 1969-10-01 55.0403225806452 1969-11-01 53.8810483870968 1969-12-01 52.8729838709677 1970-01-01 51.0842158345940 1970-02-01 51.3853904282116 1970-03-01 56.1147458480121 1970-04-01 57.2219426270760 1970-05-01 57.4949698189135 1970-06-01 57.3869346733668 1970-07-01 58.1617277749874 1970-08-01 56.9924812030075 1970-09-01 56.6066066066066 1970-10-01 55.5000000000000 1970-11-01 54.7452547452548 1970-12-01 54.7726136931534 1971-01-01 53.1437125748503 1971-02-01 53.0907278165504 1971-03-01 57.4838388861263 1971-04-01 58.6805555555556 1971-05-01 58.9489340604859 1971-06-01 58.3333333333333 1971-07-01 58.1141439205955 1971-08-01 56.8656716417910 1971-09-01 55.5610972568579 1971-10-01 55.1224387806097 1971-11-01 54.1583166332665 1971-12-01 53.5175879396985 1972-01-01 52.4987380111055 1972-02-01 52.7449974345818 1972-03-01 55.5097837281153 1972-04-01 55.9462254395036 1972-05-01 55.9295701708959 1972-06-01 55.4805194805195 1972-07-01 55.6935817805383 1972-08-01 54.8002075765438 1972-09-01 54.2797494780793 1972-10-01 53.6292428198433 1972-11-01 52.9103303618249 1972-12-01 52.4960588544404 1973-01-01 51.5071390798519 1973-02-01 51.0898458266879 1973-03-01 53.2550693703308 1973-04-01 54.4724156400643 1973-05-01 54.4133476856835 1973-06-01 54.7464940668824 1973-07-01 54.8806941431670 1973-08-01 52.9347826086956 1973-09-01 52.9956427015251 1973-10-01 52.5970475669765 1973-11-01 51.1806699615596 1973-12-01 49.7246696035242 1974-01-01 47.4820143884892 1974-02-01 47.8622987229317 1974-03-01 51.0602678571429 1974-04-01 52.3516237402016 1974-05-01 52.7497194163861 1974-06-01 51.6038266741700 1974-07-01 50.7361268403171 1974-08-01 50.2267573696145 1974-09-01 50.3416856492027 1974-10-01 50.3144654088050 1974-11-01 48.6486486486486 1974-12-01 47.5476053087132 1975-01-01 45.9224985540775 1975-02-01 45.4439930354034 1975-03-01 47.7551020408163 1975-04-01 49.4454173963806 1975-05-01 50.2339181286550 1975-06-01 48.6834406085430 1975-07-01 49.1176470588235 1975-08-01 48.5562757807896 1975-09-01 47.9056047197640 1975-10-01 48.1371969248965 1975-11-01 47.0902612826603 1975-12-01 47.5566150178784 1976-01-01 45.4871488344292 1976-02-01 44.8441247002398 1976-03-01 47.8941034897714 1976-04-01 48.2841661649609 1976-05-01 47.2289156626506 1976-06-01 46.6546112115732 1976-07-01 47.6075105996366 1976-08-01 47.1515151515152 1976-09-01 46.2749848576620 1976-10-01 44.9574726609964 1976-11-01 45.0729927007299 1976-12-01 45.1494813910921 1977-01-01 43.1456548347613 1977-02-01 43.0674846625767 1977-03-01 46.0307692307692 1977-04-01 47.1023427866831 1977-05-01 46.7940813810111 1977-06-01 46.5101914762199 1977-07-01 47.2411655300682 1977-08-01 46.2492250464972 1977-09-01 45.4094292803970 1977-10-01 43.7616387337058 1977-11-01 44.3132380360472 1977-12-01 44.8039825762290 1978-01-01 42.4844720496894 1978-02-01 42.1641791044776 1978-03-01 44.9564134495641 1978-04-01 47.1651090342679 1978-05-01 47.4797759800871 1978-06-01 47.1651090342679 1978-07-01 46.5377417342483 1978-08-01 45.3524641297567 1978-09-01 44.3820224719101 1978-10-01 43.7305053025577 1978-11-01 43.1690580162196 1978-12-01 43.2854465958776 1979-01-01 41.6875000000000 1979-02-01 41.3016270337922 1979-03-01 43.5544430538173 1979-04-01 45.3750000000000 1979-05-01 46.4084946908182 1979-06-01 46.6292134831461 1979-07-01 46.4040025015635 1979-08-01 45.6535334584115 1979-09-01 43.8750000000000 1979-10-01 43.7851342910681 1979-11-01 42.8304239401496 1979-12-01 42.0560747663551 1980-01-01 40.4242046163444 1980-02-01 39.3125000000000 1980-03-01 42.0362273579013 1980-04-01 43.7305053025577 1980-05-01 44.9221183800623 1980-06-01 45.8955223880597 1980-07-01 46.2928348909657 1980-08-01 45.3697949036669 1980-09-01 44.2998760842627 1980-10-01 43.5024752475248 1980-11-01 43.0160692212608 1980-12-01 42.7424336009883 1981-01-01 41.1764705882353 1981-02-01 40.5220633934121 1981-03-01 42.9993777224642 1981-04-01 45.4828660436137 1981-05-01 45.4431960049938 1981-06-01 46.5625000000000 1981-07-01 46.0526315789474 1981-08-01 44.7994987468672 1981-09-01 43.4564809016907 1981-10-01 42.5798371947401 1981-11-01 42.7586206896552 1981-12-01 42.2835633626098 1982-01-01 40.4255319148936 1982-02-01 39.9249061326658 1982-03-01 42.6433915211970 1982-04-01 45.3300124533001 1982-05-01 45.4037267080745 1982-06-01 44.8511166253102 1982-07-01 45.0712957222567 1982-08-01 44.2865966646078 1982-09-01 43.2881773399015 1982-10-01 43.2432432432432 1982-11-01 43.6887254901961 1982-12-01 43.5049019607843 1983-01-01 41.5441176470588 1983-02-01 41.5544675642595 1983-03-01 44.0097799511002 1983-04-01 46.4590964590965 1983-05-01 46.7968273337401 1983-06-01 46.5611685940353 1983-07-01 45.8966565349544 1983-08-01 44.6937537901759 1983-09-01 43.7916414294367 1983-10-01 43.5386473429952 1983-11-01 43.5727217863609 1983-12-01 43.0036188178528 1984-01-01 41.3751507840772 1984-02-01 40.7854984894260 1984-03-01 42.3749246534057 1984-04-01 45.4600120264582 1984-05-01 45.7983193277311 1984-06-01 45.7809694793537 1984-07-01 45.4491017964072 1984-08-01 44.9880668257757 1984-09-01 44.7619047619048 1984-10-01 43.8429506246282 1984-11-01 43.0011862396204 1984-12-01 42.9756965026675 1985-01-01 41.4446417998816 1985-02-01 40.8175355450237 1985-03-01 42.3829282750445 1985-04-01 44.2409923213231 1985-05-01 44.3985849056604 1985-06-01 44.2092886537331 1985-07-01 44.5358401880141 1985-08-01 43.6512580456407 1985-09-01 43.0823117338004 1985-10-01 42.8321678321678 1985-11-01 42.8155904595695 1985-12-01 42.0930232558140 1986-01-01 41.4875072632191 1986-02-01 40.7428903076030 1986-03-01 42.6836321573164 1986-04-01 44.9710982658960 1986-05-01 44.6304849884527 1986-06-01 44.8156682027650 1986-07-01 45.2873563218391 1986-08-01 44.3110348770726 1986-09-01 43.2155074116306 1986-10-01 42.8977272727273 1986-11-01 42.8571428571429 1986-12-01 41.7139614074915 1987-01-01 40.2604756511891 1987-02-01 39.7275822928490 1987-03-01 42.0248868778280 1987-04-01 44.4130925507901 1987-05-01 44.7383230163196 1987-06-01 44.4756029164330 1987-07-01 44.0896358543417 1987-08-01 44.1652707984366 1987-09-01 43.0640668523677 1987-10-01 42.2074320576816 1987-11-01 42.5884955752212 1987-12-01 42.0353982300885 1988-01-01 40.0662251655629 1988-02-01 39.1256225788600 1988-03-01 41.8643132928847 1988-04-01 44.7194719471947 1988-05-01 45.0109649122807 1988-06-01 44.7728516694034 1988-07-01 44.1707717569786 1988-08-01 43.7295528898582 1988-09-01 42.6789587852495 1988-10-01 42.4390243902439 1988-11-01 42.5094645754462 1988-12-01 42.1166306695464 1989-01-01 40.2050728548300 1989-02-01 40.1404646137223 1989-03-01 42.1875000000000 1989-04-01 45.0779989241528 1989-05-01 45.2982267598066 1989-06-01 45.6300268096515 1989-07-01 45.2738990332975 1989-08-01 44.0940673436665 1989-09-01 43.0244941427050 1989-10-01 43.1612559872272 1989-11-01 43.2518597236982 1989-12-01 42.7432216905901 1990-01-01 40.3191489361702 1990-02-01 40.6300053390283 1990-03-01 42.9712460063898 1990-04-01 45.4303931987248 1990-05-01 46.5288818229995 1990-06-01 46.1334745762712 1990-07-01 45.9574468085106 1990-08-01 44.9044585987261 1990-09-01 44.6853516657853 1990-10-01 45.2091053467443 1990-11-01 44.6210916799152 1990-12-01 43.9851616322205 1991-01-01 41.7634635691658 1991-02-01 41.7902542372881 1991-03-01 44.2510548523207 1991-04-01 46.8029350104822 1991-05-01 47.9645093945720 1991-06-01 47.7853048462741 1991-07-01 47.4425887265136 1991-08-01 46.7532467532468 1991-09-01 45.9865354738477 1991-10-01 45.5015511892451 1991-11-01 45.6095041322314 1991-12-01 45.7320227625453 1992-01-01 43.3834976647639 1992-02-01 43.6458333333333 1992-03-01 45.6725755995829 1992-04-01 48.4056455828542 1992-05-01 49.1136600625652 1992-06-01 47.8374153204794 1992-07-01 48.2740585774059 1992-08-01 47.9123173277662 1992-09-01 46.4025026068822 1992-10-01 46.4546402502607 1992-11-01 46.4825429911412 1992-12-01 46.4229765013055 1993-01-01 43.8578149503398 1993-02-01 43.6745406824147 1993-03-01 45.8398744113030 1993-04-01 48.6656200941915 1993-05-01 48.6387434554974 1993-06-01 48.5878661087866 1993-07-01 49.2905937992643 1993-08-01 48.1384373361300 1993-09-01 46.9323544834819 1993-10-01 47.7964323189927 1993-11-01 47.5865687303253 1993-12-01 47.2689075630252 1994-01-01 44.5789473684211 1994-02-01 44.5738485971413 1994-03-01 47.1179270227393 1994-04-01 49.4976203067160 1994-05-01 49.6029645314981 1994-06-01 48.9417989417989 1994-07-01 49.2029755579171 1994-08-01 48.8841657810840 1994-09-01 47.6645435244161 1994-10-01 47.3712161444503 1994-11-01 47.5026567481403 1994-12-01 47.3908413205538 1995-01-01 45.4157782515992 1995-02-01 44.9865951742627 1995-03-01 46.9989281886388 1995-04-01 48.7399463806970 1995-05-01 48.7922705314010 1995-06-01 49.0322580645161 1995-07-01 49.5135135135135 1995-08-01 48.7567567567568 1995-09-01 47.7837837837838 1995-10-01 47.6473769605192 1995-11-01 47.7531131564700 1995-12-01 47.0141150922910 1996-01-01 45.8900381056070 1996-02-01 46.0021905805038 1996-03-01 47.4001094690750 1996-04-01 49.5071193866375 1996-05-01 50.0274273176083 1996-06-01 50.7962657880286 1996-07-01 50.4145936981758 1996-08-01 49.5844875346260 1996-09-01 48.5603543743079 1996-10-01 47.4764281752634 1996-11-01 47.1111111111111 1996-12-01 47.2423398328691 1997-01-01 46.1968680089486 1997-02-01 46.2014631401238 1997-03-01 47.5225225225225 1997-04-01 49.4369369369369 1997-05-01 50.4230118443316 1997-06-01 50.3389830508475 1997-07-01 50.3412969283276 1997-08-01 49.8573873359954 1997-09-01 49.3166287015945 1997-10-01 48.4018264840183 1997-11-01 47.5128644939966 1997-12-01 47.5644699140401 1998-01-01 46.2867012089810 1998-02-01 45.6597222222222 1998-03-01 47.3410404624278 1998-04-01 49.7106481481481 1998-05-01 50.3480278422274 1998-06-01 49.9709471237652 1998-07-01 49.7954412624196 1998-08-01 49.5896834701055 1998-09-01 48.2415005861665 1998-10-01 47.8260869565217 1998-11-01 47.8209658421673 1998-12-01 47.6387249114522 1999-01-01 45.9123222748815 1999-02-01 45.0536352800954 1999-03-01 46.9886702444842 1999-04-01 48.9552238805970 1999-05-01 50.0897666068223 1999-06-01 49.4004796163070 1999-07-01 48.5214242607121 1999-08-01 48.2175226586103 1999-09-01 46.7917675544794 1999-10-01 46.2098241358399 1999-11-01 45.8637469586375 1999-12-01 46.5286236297198 2000-01-01 44.6483180428135 2000-02-01 44.0959409594096 2000-03-01 46.8019680196802 2000-04-01 48.5239852398524 2000-05-01 49.1985203452528 2000-06-01 48.4249536751081 2000-07-01 48.1665630826600 2000-08-01 47.3225404732254 2000-09-01 46.6998754669988 2000-10-01 47.4438902743142 2000-11-01 47.2534332084894 2000-12-01 46.8417761100688 2001-01-01 44.5979899497487 2001-02-01 44.0581542351454 2001-03-01 46.3969658659924 2001-04-01 48.5461441213654 2001-05-01 49.0816972767574 2001-06-01 47.8426395939086 2001-07-01 47.7955271565495 2001-08-01 47.8539397821909 2001-09-01 45.5534229046705 2001-10-01 45.5769230769231 2001-11-01 45.8574181117534 2001-12-01 45.1156812339332 2002-01-01 43.4951456310680 2002-02-01 42.8013029315961 2002-03-01 45.0585175552666 2002-04-01 47.4675324675325 2002-05-01 47.1661237785016 2002-06-01 46.7362924281984 2002-07-01 46.9816272965879 2002-08-01 47.8289473684211 2002-09-01 45.6936226166995 2002-10-01 44.9637919684003 2002-11-01 44.1215323645971 2002-12-01 44.0476190476190 2003-01-01 42.7435387673956 2003-02-01 42.6284189459640 2003-03-01 44.4666666666667 2003-04-01 46.6355762824783 2003-05-01 46.8269873079492 2003-06-01 46.3855421686747 2003-07-01 45.8333333333333 2003-08-01 45.9204315576534 2003-09-01 45.2220726783311 2003-10-01 44.0323668240054 2003-11-01 44.1593517893315 2003-12-01 44.1355932203390 2004-01-01 41.9836956521739 2004-02-01 41.5584415584416 2004-03-01 43.4219495569189 2004-04-01 45.3678474114441 2004-05-01 45.6284153005464 2004-06-01 44.9245541838134 2004-07-01 45.6237077877326 2004-08-01 45.9944751381215 2004-09-01 45.0519031141868 2004-10-01 44.6985446985447 2004-11-01 43.8584316446912 2004-12-01 43.6022253129346 2005-01-01 41.5212840195394 2005-02-01 41.2342215988780 2005-03-01 43.4173669467787 2005-04-01 45.7924263674614 2005-05-01 46.2780898876404 2005-06-01 46.0239268121042 2005-07-01 45.9688826025460 2005-08-01 46.1374911410347 2005-09-01 45.6413890857548 2005-10-01 45.5642299503194 2005-11-01 44.9822064056940 2005-12-01 44.6899501069138 2006-01-01 42.9592566118656 2006-02-01 42.5287356321839 2006-03-01 43.9426523297491 2006-04-01 46.2311557788945 2006-05-01 46.4414090582315 2006-06-01 46.9402447804176 2006-07-01 46.3096960926194 2006-08-01 45.7184325108853 2006-09-01 45.1051486584482 2006-10-01 45.5007256894049 2006-11-01 44.4767441860465 2006-12-01 43.0029154518950 2007-01-01 41.8809698750918 2007-02-01 42.7520235467255 2007-03-01 44.3708609271523 2007-04-01 47.7941176470588 2007-05-01 47.2017673048601 2007-06-01 46.9417833456153 2007-07-01 45.4881656804734 2007-08-01 44.9146250927988 2007-09-01 44.9479940564636 2007-10-01 44.5765230312036 2007-11-01 44.3368107302534 2007-12-01 43.2513049962714 2008-01-01 41.4798206278027 2008-02-01 41.9040479760120 2008-03-01 43.4684684684685 2008-04-01 47.2932330827068 2008-05-01 47.5187969924812 2008-06-01 46.0437076111530 2008-07-01 44.0665154950869 2008-08-01 45.6752655538695 2008-09-01 44.7308567096285 2008-10-01 43.6930091185410 2008-11-01 44.2498095963442 2008-12-01 43.3257055682685 2009-01-01 41.6666666666667 2009-02-01 41.4559386973180 2009-03-01 42.0567920184190 2009-04-01 45.8173445894091 2009-05-01 46.3901689708141 2009-06-01 45.3775038520801 2009-07-01 44.3759630200308 2009-08-01 44.1518202943455 2009-09-01 43.5321456235476 2009-10-01 42.6026336173509 2009-11-01 42.8904428904429 2009-12-01 41.9003115264798 2010-01-01 40.5932864949258 2010-02-01 40.2190923317684 2010-03-01 42.1176470588235 2010-04-01 43.8775510204082 2010-05-01 44.2610062893082 2010-06-01 44.4968553459119 2010-07-01 43.1388012618297 2010-08-01 43.3544303797468 2010-09-01 43.1061806656101 2010-10-01 42.7553444180523 2010-11-01 42.9252782193959 2010-12-01 42.5616547334924 2011-01-01 40.4628890662410 2011-02-01 40.4153354632588 2011-03-01 42.0147420147420 2011-04-01 45.2536824877250 2011-05-01 45.3201970443350 2011-06-01 45.1559934318555 2011-07-01 43.7860082304527 2011-08-01 43.2724252491694 2011-09-01 41.6935483870968 2011-10-01 41.2238325281804 2011-11-01 41.4987912973408 2011-12-01 41.1764705882353 2012-01-01 38.9830508474576 2012-02-01 39.6440129449838 2012-03-01 39.7249190938511 2012-04-01 43.8056680161943 2012-05-01 42.8687196110211 2012-06-01 42.9497568881686 2012-07-01 43.5523114355231 2012-08-01 43.3685923515053 2012-09-01 42.3452768729642 2012-10-01 42.3108218063466 2012-11-01 41.3202933985330 2012-12-01 39.9673735725938 2013-01-01 39.9509803921569 2013-02-01 40.0981996726678 2013-03-01 40.3924775143091 2013-04-01 44.9795918367347 2013-05-01 44.4444444444444 2013-06-01 43.3469387755102 2013-07-01 42.9156429156429 2013-08-01 43.9244663382594 2013-09-01 42.6579163248564 2013-10-01 42.0836751435603 2013-11-01 42.6108374384236 2013-12-01 41.6598192276089 2014-01-01 39.8193760262726 2014-02-01 40.6584362139918 2014-03-01 41.9275123558484 2014-04-01 43.9044481054366 2014-05-01 44.4444444444444 2014-06-01 44.1975308641975 2014-07-01 43.7500000000000 2014-08-01 43.6468646864686 2014-09-01 43.6933223413026 2014-10-01 41.9141914191419 2014-11-01 42.0792079207921 2014-12-01 42.6919900908340 2015-01-01 40.4624277456647 2015-02-01 39.8676592224979 2015-03-01 40.3798513625103 2015-04-01 44.1783649876135 2015-05-01 44.2704039571311 2015-06-01 43.9868204283361 2015-07-01 42.9397192402973 2015-08-01 43.0463576158940 2015-09-01 43.4818481848185 2015-10-01 43.4351775392238 2015-11-01 43.3993399339934 2015-12-01 42.8689200329761 2016-01-01 42.2093981863149 2016-02-01 41.9834710743802 2016-03-01 42.4567188788129 2016-04-01 45.7543281121187 2016-05-01 45.4695222405272 2016-06-01 46.4197530864198 2016-07-01 45.0205761316872 2016-08-01 45.2518579686210 2016-09-01 45.1772464962902 2016-10-01 45.5967078189300 2016-11-01 43.7860082304527 2016-12-01 44.3986820428336 2017-01-01 43.4426229508197 2017-02-01 41.6256157635468 2017-03-01 41.6256157635468 2017-04-01 45.9836065573770 2017-05-01 46.3993453355156 2017-06-01 46.9287469287469 2017-07-01 46.4811783960720 2017-08-01 45.6486042692939 2017-09-01 45.1269451269451 2017-10-01 44.4807849550286 2017-11-01 43.2896890343699 2017-12-01 44.5536445536446 2018-01-01 45.0450450450450 2018-02-01 44.7540983606557 2018-03-01 45.4918032786885 2018-04-01 47.9149632052330 2018-05-01 48.9779231398201 2018-06-01 49.8775510204082 2018-07-01 49.3877551020408 2018-08-01 48.7704918032787 2018-09-01 47.3813420621931