Month Percent 1986-01-01 48.9963126931660 1986-02-01 49.0630033453104 1986-03-01 49.1563645532764 1986-04-01 49.5671142174867 1986-05-01 49.7042717878012 1986-06-01 49.9151955591589 1986-07-01 49.8821358055471 1986-08-01 49.8851656693125 1986-09-01 49.6743879317451 1986-10-01 49.4731297959414 1986-11-01 49.3906232027962 1986-12-01 49.4162557882304 1987-01-01 49.5072923539073 1987-02-01 49.2834220102488 1987-03-01 49.1504852954035 1987-04-01 48.8520048885526 1987-05-01 49.0004915329670 1987-06-01 49.3452993455894 1987-07-01 49.6279507702143 1987-08-01 49.8537447134206 1987-09-01 49.6538510370618 1987-10-01 49.4701812768193 1987-11-01 49.0937054603139 1987-12-01 48.9919991547837 1988-01-01 48.7673620067986 1988-02-01 48.5972205371675 1988-03-01 48.2327883688086 1988-04-01 48.2122283036474 1988-05-01 48.2182208287827 1988-06-01 48.2603445884335 1988-07-01 48.1999437021298 1988-08-01 48.0927214752401 1988-09-01 47.9772578670992 1988-10-01 47.6196391767131 1988-11-01 47.5029905486262 1988-12-01 47.4710650037087 1989-01-01 47.5091243336540 1989-02-01 47.3615366234804 1989-03-01 47.2901780714526 1989-04-01 47.2911432599753 1989-05-01 47.5752376763806 1989-06-01 47.7452298009009 1989-07-01 47.7898081518764 1989-08-01 47.6982252003994 1989-09-01 47.4113459448670 1989-10-01 47.1682781616779 1989-11-01 46.8907839795578 1989-12-01 46.6509323102692 1990-01-01 46.6831611728431 1990-02-01 46.8759863757791 1990-03-01 47.0524100175567 1990-04-01 47.3887583201059 1990-05-01 47.5399896687884 1990-06-01 47.6930758951644 1990-07-01 47.8582538377133 1990-08-01 47.8904483736491 1990-09-01 47.7452458955788 1990-10-01 47.4025276107987 1990-11-01 47.0090500827613 1990-12-01 47.0035055516292 1991-01-01 46.8929856601001 1991-02-01 46.7027400290241 1991-03-01 47.1431003055231 1991-04-01 47.7769578948274 1991-05-01 48.1837054921120 1991-06-01 47.9213403622856 1991-07-01 47.5953698677365 1991-08-01 47.3117176058070 1991-09-01 47.2722013553338 1991-10-01 47.1270847764693 1991-11-01 46.9691181931648 1991-12-01 46.6979292936268 1992-01-01 46.5444049846616 1992-02-01 46.6526793392841 1992-03-01 46.9801851417114 1992-04-01 47.3676263922603 1992-05-01 47.5694492030644 1992-06-01 47.6337038132520 1992-07-01 47.3105837271897 1992-08-01 47.1689322344438 1992-09-01 46.8351724802709 1992-10-01 46.4161373203780 1992-11-01 45.6859965801752 1992-12-01 45.2786109708936 1993-01-01 45.0596482751152 1993-02-01 45.0310681711370 1993-03-01 45.1495489135513 1993-04-01 45.4955006318085 1993-05-01 45.8204645193343 1993-06-01 45.3804274809791 1993-07-01 44.8365460023940 1993-08-01 44.4762942981435 1993-09-01 44.4729545513002 1993-10-01 44.4535303840784 1993-11-01 44.0024331648992 1993-12-01 43.7019685285354 1994-01-01 43.4830010452399 1994-02-01 43.7871411750168 1994-03-01 44.0724700786109 1994-04-01 44.5412779580042 1994-05-01 45.0949830409214 1994-06-01 45.2961403629888 1994-07-01 45.3002587143761 1994-08-01 45.3895353192592 1994-09-01 45.0273752143111 1994-10-01 44.7110235338178 1994-11-01 44.0146570364359 1994-12-01 43.9196153908100 1995-01-01 43.8888000956956 1995-02-01 44.3016272461086 1995-03-01 44.6863983143866 1995-04-01 45.2543229648908 1995-05-01 45.6384687585277 1995-06-01 45.7827212300825 1995-07-01 45.8591615558433 1995-08-01 45.6293866371537 1995-09-01 45.7368732266993 1995-10-01 45.2585347168954 1995-11-01 45.1237238945208 1995-12-01 44.6270214650025 1996-01-01 44.8272727901419 1996-02-01 45.1093974581948 1996-03-01 45.8450020932352 1996-04-01 45.8708864519594 1996-05-01 45.9453247924192 1996-06-01 46.2625190752851 1996-07-01 46.6212457742313 1996-08-01 46.6091841055536 1996-09-01 46.4866717641786 1996-10-01 45.9478409093125 1996-11-01 45.4622736589950 1996-12-01 45.4724198890300 1997-01-01 45.6555387244621 1997-02-01 45.9193746072872 1997-03-01 45.8679618531935 1997-04-01 46.0509050966013 1997-05-01 46.2934085192463 1997-06-01 46.0866991159999 1997-07-01 45.6625291393808 1997-08-01 45.3990195908744 1997-09-01 45.6945375351211 1997-10-01 45.7741866501984 1997-11-01 45.5698445090740 1997-12-01 45.5145333213474 1998-01-01 45.8724734789302 1998-02-01 45.7853655467112 1998-03-01 45.8361013977694 1998-04-01 45.8055897599611 1998-05-01 45.9190554733019 1998-06-01 46.0479036813516 1998-07-01 45.7615952877839 1998-08-01 45.5866076761295 1998-09-01 45.3541654696791 1998-10-01 44.9248302322455 1998-11-01 44.6436498127288 1998-12-01 44.7463476230979 1999-01-01 45.2643440610841 1999-02-01 45.3603156630127 1999-03-01 45.2693133367125 1999-04-01 45.4081077537265 1999-05-01 45.7580111604905 1999-06-01 45.7529529930210 1999-07-01 45.5409526434621 1999-08-01 45.3326389312117 1999-09-01 45.0873766001989 1999-10-01 44.6467816451619 1999-11-01 44.4600972618903 1999-12-01 44.6223974939970 2000-01-01 45.0251381498908 2000-02-01 45.2993954471039 2000-03-01 45.5475640233129 2000-04-01 45.3609619453304 2000-05-01 45.7454523616054 2000-06-01 45.8321791247027 2000-07-01 45.9086463019856 2000-08-01 45.7798185889751 2000-09-01 45.7121462843599 2000-10-01 45.8048547366143 2000-11-01 45.6419683181544 2000-12-01 45.8251977036633 2001-01-01 46.2098295201291 2001-02-01 46.5439380591189 2001-03-01 46.4544924002813 2001-04-01 46.5362680457067 2001-05-01 46.4307273701812 2001-06-01 46.3858440672183 2001-07-01 46.1424012477609 2001-08-01 45.9835737534221 2001-09-01 45.7894741494921 2001-10-01 45.5461593168354 2001-11-01 45.6085139815177 2001-12-01 45.6661996269542 2002-01-01 46.0602464836324 2002-02-01 46.0778680195931 2002-03-01 46.1690638987863 2002-04-01 46.4792287069139 2002-05-01 46.6647019227751 2002-06-01 46.7753896933635 2002-07-01 46.8608702677206 2002-08-01 46.6905265384719 2002-09-01 46.2396087850325 2002-10-01 45.9307011867726 2002-11-01 45.8028953046851 2002-12-01 45.8176967709602 2003-01-01 45.6528500703689 2003-02-01 45.4085786519261 2003-03-01 45.3042800517778 2003-04-01 45.1765749005076 2003-05-01 45.4797797128351 2003-06-01 45.8144744350848 2003-07-01 45.9609809939022 2003-08-01 46.0830451825031 2003-09-01 45.9432745915640 2003-10-01 45.5821820160131 2003-11-01 45.2427778026416 2003-12-01 45.2724532642695 2004-01-01 45.4254279202097 2004-02-01 45.3048785099030 2004-03-01 45.1323985254695 2004-04-01 45.1397347677023 2004-05-01 45.3395538270224 2004-06-01 45.7412479097216 2004-07-01 45.4684496844178 2004-08-01 45.3372240661868 2004-09-01 44.7058238548076 2004-10-01 44.4158781968322 2004-11-01 43.8795120769792 2004-12-01 43.9929274660798 2005-01-01 44.2301305743376 2005-02-01 44.2280501635302 2005-03-01 44.1847467851936 2005-04-01 44.2131421822715 2005-05-01 44.3159664415529 2005-06-01 44.4872912477870 2005-07-01 44.5142827775408 2005-08-01 44.6262695070597 2005-09-01 44.6860971033427 2005-10-01 44.7159159764883 2005-11-01 44.6284638035374 2005-12-01 44.4781346504174 2006-01-01 44.4830210601817 2006-02-01 44.4372365105996 2006-03-01 44.5059815167530 2006-04-01 44.7448532234277 2006-05-01 45.2055059772335 2006-06-01 45.5148985571297 2006-07-01 45.6721398877961 2006-08-01 45.8250115151052 2006-09-01 45.6931277872718 2006-10-01 45.5588853121541 2006-11-01 45.4609428628428 2006-12-01 45.4277214535050 2007-01-01 45.1438745959454 2007-02-01 44.8622414731101 2007-03-01 44.7718157314298 2007-04-01 45.1017542360912 2007-05-01 45.5348049476508 2007-06-01 45.7477719597025 2007-07-01 45.6246005019494 2007-08-01 45.4901180899677 2007-09-01 45.3797994815213 2007-10-01 45.0484779099854 2007-11-01 44.3538900357891 2007-12-01 43.7318497682289 2008-01-01 43.8001188344627 2008-02-01 43.7872065546403 2008-03-01 43.8599366067464 2008-04-01 43.9664018697134 2008-05-01 43.9744513810249 2008-06-01 43.9207405430437 2008-07-01 44.0513379225133 2008-08-01 44.4038674603661 2008-09-01 44.3510860118737 2008-10-01 43.9923114594484 2008-11-01 43.6707746941712 2008-12-01 43.8916972459638 2009-01-01 43.9463925564100 2009-02-01 43.9669034431957 2009-03-01 43.7394120827024 2009-04-01 43.9781924490645 2009-05-01 44.0426762848484 2009-06-01 44.2304839529504 2009-07-01 44.2232428571636 2009-08-01 44.3814792153771 2009-09-01 44.3834941896322 2009-10-01 44.3014553963111 2009-11-01 44.1382358787133 2009-12-01 44.0184695928546 2010-01-01 43.9966776118253 2010-02-01 42.3146946447770 2010-03-01 42.3018721740341 2010-04-01 42.2217923705697 2010-05-01 42.0265675439510 2010-06-01 41.7230031416800 2010-07-01 41.5004497435145 2010-08-01 41.0901338272860 2010-09-01 41.1495521469168 2010-10-01 41.0173426355287 2010-11-01 40.7044685892654 2010-12-01 40.2513446459866 2011-01-01 40.3242373467578 2011-02-01 40.3426912138187 2011-03-01 40.3836595945077 2011-04-01 40.3269762879678 2011-05-01 40.0924638952274 2011-06-01 40.2582488105693 2011-07-01 40.1915784088761 2011-08-01 40.1038859106122 2011-09-01 40.2474259434140 2011-10-01 40.3527430647877 2011-11-01 40.2607691184216 2011-12-01 40.1186523462680 2012-01-01 39.9924804727737 2012-02-01 40.1071243812682 2012-03-01 40.1639816188917 2012-04-01 40.1796834391768 2012-05-01 40.5813011085089 2012-06-01 40.9363698197765 2012-07-01 41.0803870953609 2012-08-01 40.6612719418219 2012-09-01 40.4983656250471 2012-10-01 40.4880216328333 2012-11-01 40.4641590076334 2012-12-01 40.2661972174319 2013-01-01 40.2766065290559 2013-02-01 40.3668312371260 2013-03-01 40.1597785585833 2013-04-01 40.1376782400362 2013-05-01 40.4377656535307 2013-06-01 40.8883567612049 2013-07-01 40.8868307893984 2013-08-01 40.9244021583615 2013-09-01 40.6836767833927 2013-10-01 40.5231196411820 2013-11-01 40.0695385202556 2013-12-01 39.7752859006628 2014-01-01 39.6298308116318 2014-02-01 39.8735276544768 2014-03-01 39.9655921811596 2014-04-01 40.2195924415482 2014-05-01 40.4191315318006 2014-06-01 40.7390495991953 2014-07-01 40.8052091747095 2014-08-01 40.5583736008630 2014-09-01 40.4478672984109 2014-10-01 40.1968164189846 2014-11-01 39.9558052626435 2014-12-01 40.0378088091611 2015-01-01 40.2363551111851 2015-02-01 40.4251224544026 2015-03-01 40.3858303649734 2015-04-01 40.2886842811910 2015-05-01 40.4251118028615 2015-06-01 40.5393364983134 2015-07-01 40.5583722012635 2015-08-01 40.3169528171679 2015-09-01 40.5065574122386 2015-10-01 40.3712321199232 2015-11-01 40.1790933568483 2015-12-01 40.0205939925634 2016-01-01 40.2848535264579 2016-02-01 40.5615051080935 2016-03-01 40.4408642716583 2016-04-01 40.4031845664119 2016-05-01 40.5642113988957 2016-06-01 40.5038493477618 2016-07-01 40.6533963185819 2016-08-01 40.5733038904338 2016-09-01 40.6077531240045 2016-10-01 40.3833798406533 2016-11-01 40.4541440390711 2016-12-01 40.3491337806547 2017-01-01 40.6167606327295 2017-02-01 40.5343646103629 2017-03-01 40.5001070455022 2017-04-01 40.2835579663791 2017-05-01 40.4190063766146 2017-06-01 40.4630650642890 2017-07-01 40.4857636286453 2017-08-01 40.2955626102084 2017-09-01 40.3054275617265 2017-10-01 40.0325181794495 2017-11-01 39.9395172742111 2017-12-01 39.7363058830681 2018-01-01 39.8974040604348 2018-02-01 40.0513343690100 2018-03-01 40.2236088063096 2018-04-01 40.0738375759672 2018-05-01 40.1344730572989 2018-06-01 40.3446814915446 2018-07-01 40.5432885866990 2018-08-01 40.7931924831332