Month Percent 1999-06-01 6.59776767259198 1999-07-01 6.40132669983416 1999-08-01 6.24275542308329 1999-09-01 5.25925925925926 1999-10-01 5.17213114754098 1999-11-01 4.81226430562387 1999-12-01 5.02742230347349 2000-01-01 5.48586026917513 2000-02-01 5.66615620214395 2000-03-01 4.77311875379661 2000-04-01 4.39064558629776 2000-05-01 4.03041887479696 2000-06-01 3.84306264044483 2000-07-01 3.81189212181695 2000-08-01 3.95983513686596 2000-09-01 3.89991019675076 2000-10-01 3.71059927316482 2000-11-01 3.91715590345727 2000-12-01 4.27437108862889 2001-01-01 5.04139338043130 2001-02-01 5.26695587235792 2001-03-01 5.02755957488943 2001-04-01 4.03097133693478 2001-05-01 3.66267039187111 2001-06-01 3.48604215117449 2001-07-01 3.49547866558230 2001-08-01 3.53318107351244 2001-09-01 3.22006446543402 2001-10-01 3.22848939964652 2001-11-01 3.23702750033986 2001-12-01 3.41463808877251 2002-01-01 3.74820938894119 2002-02-01 3.82518566881580 2002-03-01 3.48176315006713 2002-04-01 3.31602932435110 2002-05-01 3.09552982095569 2002-06-01 2.92024307772339 2002-07-01 2.80044744139148 2002-08-01 3.16686581573304 2002-09-01 2.76549194906584 2002-10-01 2.88757489133414 2002-11-01 3.01469260187054 2002-12-01 3.06507039130917 2003-01-01 3.25837834372446 2003-02-01 3.42095585296046 2003-03-01 3.36525156362429 2003-04-01 3.13476179263794 2003-05-01 3.13189512010666 2003-06-01 3.11123927394025 2003-07-01 3.10558520822425 2003-08-01 3.28224816691318 2003-09-01 3.16887378413219 2003-10-01 3.20582566525740 2003-11-01 3.07662403296661 2003-12-01 3.25926739007715 2004-01-01 3.40663601617460 2004-02-01 3.58814966361097 2004-03-01 3.32956411289073 2004-04-01 3.17888138490801 2004-05-01 3.18257698728354 2004-06-01 2.97111733343562 2004-07-01 3.37804004344845 2004-08-01 3.44632593304104 2004-09-01 3.19197971882922 2004-10-01 3.30590520471682 2004-11-01 3.44824946216802 2004-12-01 3.49893574359133 2005-01-01 3.81227775389786 2005-02-01 3.93658418659783 2005-03-01 3.72314743142680 2005-04-01 3.50726792704761 2005-05-01 3.29345850999394 2005-06-01 3.38036693777189 2005-07-01 3.38528573822692 2005-08-01 3.54059515062454 2005-09-01 3.50997359148230 2005-10-01 3.46380981223501 2005-11-01 3.16176192099383 2005-12-01 3.23833202879200 2006-01-01 3.54031050455050 2006-02-01 3.85018980895651 2006-03-01 3.72976776917664 2006-04-01 3.60023386903334 2006-05-01 3.33795592138618 2006-06-01 3.41368602131320 2006-07-01 3.39640117421215 2006-08-01 3.32121847952340 2006-09-01 3.20375014928938 2006-10-01 3.27668010602989 2006-11-01 3.20830612123731 2006-12-01 3.22597601543903 2007-01-01 3.68289590561583 2007-02-01 3.72849527501817 2007-03-01 3.63416784594981 2007-04-01 3.46025080027018 2007-05-01 3.36515966779740 2007-06-01 3.24332214275288 2007-07-01 3.13542606157930 2007-08-01 3.17824329290702 2007-09-01 3.00304040441042 2007-10-01 3.04448451839467 2007-11-01 3.04613722943091 2007-12-01 3.05517623177708 2008-01-01 3.19526538786307 2008-02-01 3.56068727294384 2008-03-01 3.41677325050247 2008-04-01 3.33951225163645 2008-05-01 3.18517185531762 2008-06-01 2.92547250704347 2008-07-01 2.99433601500776 2008-08-01 3.17820082985148 2008-09-01 3.10971550950713 2008-10-01 3.14790020011806 2008-11-01 3.18488742512386 2008-12-01 3.30819146834832 2009-01-01 3.63978570317073 2009-02-01 4.00171164657449 2009-03-01 4.17548028164933 2009-04-01 3.98440696948160 2009-05-01 3.94148487835540 2009-06-01 3.79944606206946 2009-07-01 3.87401213407725 2009-08-01 3.92884418634811 2009-09-01 3.57419410347597 2009-10-01 3.42014995381079 2009-11-01 3.39650187501789 2009-12-01 3.38087998894377 2010-01-01 4.62336523708629 2010-02-01 4.62889473032702 2010-03-01 4.07994714238520 2010-04-01 3.82863256038031 2010-05-01 3.37337513650615 2010-06-01 3.43316186315270 2010-07-01 3.68206674935167 2010-08-01 3.34593854427551 2010-09-01 3.34809252240445 2010-10-01 3.32894449646898 2010-11-01 3.19601770537242 2010-12-01 3.34139606567202 2011-01-01 3.50770036211335 2011-02-01 4.11744080373818 2011-03-01 3.98178470533669 2011-04-01 3.61698714595582 2011-05-01 3.14051655794935 2011-06-01 3.01989915173710 2011-07-01 3.03038756878526 2011-08-01 2.98111495095472 2011-09-01 3.01333034614092 2011-10-01 2.91318042431559 2011-11-01 2.80229126887693 2011-12-01 2.83282726164728 2012-01-01 3.24462867902375 2012-02-01 3.85982517013052 2012-03-01 3.59764335557196 2012-04-01 3.34679030546868 2012-05-01 2.97036488746333 2012-06-01 3.04830421377184 2012-07-01 2.90369880836827 2012-08-01 2.90160379052645 2012-09-01 2.88914527449284 2012-10-01 2.69062598516935 2012-11-01 2.78419234984731 2012-12-01 2.86785051311688 2013-01-01 3.32473407074955 2013-02-01 3.84721096585503 2013-03-01 3.20141915723680 2013-04-01 2.98581957909995 2013-05-01 2.97010188061142 2013-06-01 2.96240958945974 2013-07-01 2.94791070406411 2013-08-01 2.92043553947503 2013-09-01 2.73329164174235 2013-10-01 2.71570148283127 2013-11-01 2.60689206409457 2013-12-01 2.63642611683849 2014-01-01 2.94557126649880 2014-02-01 3.77194602321303 2014-03-01 3.59104437229437 2014-04-01 3.44721801703268 2014-05-01 3.09449081803005 2014-06-01 3.04384958232139 2014-07-01 2.93997822733071 2014-08-01 3.10468347226407 2014-09-01 2.91923516172336 2014-10-01 3.00752881604371 2014-11-01 2.84064772901514 2014-12-01 3.05778295497643 2015-01-01 3.30620897155361 2015-02-01 3.76879475952890 2015-03-01 3.47827256104120 2015-04-01 3.34401801957897 2015-05-01 3.33927423789679 2015-06-01 3.36266998913130 2015-07-01 3.34811383189940 2015-08-01 3.20437202172682 2015-09-01 3.04620172358762 2015-10-01 2.87079111418630 2015-11-01 2.90170837664241 2015-12-01 2.92849890055208 2016-01-01 3.37445819802438 2016-02-01 4.26568425030026 2016-03-01 3.91140810691849 2016-04-01 3.57706854223343 2016-05-01 3.41649808945830 2016-06-01 3.35848459265513 2016-07-01 3.31276965168894 2016-08-01 3.38965194832559 2016-09-01 3.32540942045686 2016-10-01 3.07394838607845 2016-11-01 2.82869129395338 2016-12-01 2.82741370685343 2017-01-01 3.46495956873315 2017-02-01 4.31127928551003 2017-03-01 3.65341028884672 2017-04-01 3.84356299663190 2017-05-01 3.30494860710228 2017-06-01 3.53759303029711 2017-07-01 3.20549662991797 2017-08-01 3.49065622503634 2017-09-01 3.25260600360530 2017-10-01 3.06089795918367 2017-11-01 2.95366644018188 2017-12-01 3.14088885376327 2018-01-01 3.35619533721456 2018-02-01 3.94408619271289 2018-03-01 4.21443681282808 2018-04-01 4.00199743187331 2018-05-01 3.91210523595389 2018-06-01 3.48354417260968 2018-07-01 3.47920983740735 2018-08-01 3.81476709226504 2018-09-01 3.49891896454334