Month Percent 1968-01-01 83.8797814207650 1968-02-01 83.1062670299727 1968-03-01 83.6956521739130 1968-04-01 85.5978260869565 1968-05-01 86.7208672086721 1968-06-01 86.7208672086721 1968-07-01 85.9078590785908 1968-08-01 85.1351351351351 1968-09-01 86.7567567567568 1968-10-01 87.8706199460916 1968-11-01 86.7924528301887 1968-12-01 84.3243243243243 1969-01-01 82.8418230563003 1969-02-01 83.1099195710456 1969-03-01 84.7593582887700 1969-04-01 84.8000000000000 1969-05-01 86.9333333333333 1969-06-01 87.4666666666667 1969-07-01 85.9042553191489 1969-08-01 86.7021276595745 1969-09-01 87.5331564986737 1969-10-01 87.8306878306878 1969-11-01 87.5661375661376 1969-12-01 85.4497354497354 1970-01-01 84.4327176781003 1970-02-01 83.3773087071240 1970-03-01 84.2105263157895 1970-04-01 85.7894736842105 1970-05-01 85.5643044619422 1970-06-01 86.0892388451444 1970-07-01 85.8638743455498 1970-08-01 86.1256544502618 1970-09-01 85.1174934725849 1970-10-01 85.1562500000000 1970-11-01 85.1562500000000 1970-12-01 83.5509138381201 1971-01-01 84.1145833333334 1971-02-01 84.4155844155844 1971-03-01 85.2331606217616 1971-04-01 86.7875647668394 1971-05-01 86.3049095607235 1971-06-01 86.0824742268041 1971-07-01 85.8247422680412 1971-08-01 85.8611825192802 1971-09-01 85.6041131105398 1971-10-01 84.8329048843188 1971-11-01 85.0899742930591 1971-12-01 85.0899742930591 1972-01-01 83.0334190231362 1972-02-01 82.5974025974026 1972-03-01 82.3834196891192 1972-04-01 84.9740932642487 1972-05-01 87.3056994818653 1972-06-01 86.0103626943005 1972-07-01 86.3753213367609 1972-08-01 85.3470437017995 1972-09-01 84.8329048843188 1972-10-01 83.8874680306906 1972-11-01 83.8874680306906 1972-12-01 84.1432225063939 1973-01-01 83.8874680306906 1973-02-01 83.1202046035806 1973-03-01 83.6734693877551 1973-04-01 84.3989769820972 1973-05-01 84.9872773536896 1973-06-01 85.7142857142857 1973-07-01 85.2417302798982 1973-08-01 85.7506361323155 1973-09-01 86.5139949109415 1973-10-01 87.7862595419847 1973-11-01 86.7684478371501 1973-12-01 84.6938775510204 1974-01-01 83.4605597964377 1974-02-01 83.7150127226463 1974-03-01 84.4783715012723 1974-04-01 84.4783715012723 1974-05-01 84.4387755102041 1974-06-01 84.6938775510204 1974-07-01 85.2417302798982 1974-08-01 85.4961832061069 1974-09-01 85.7142857142857 1974-10-01 85.7142857142857 1974-11-01 85.2040816326531 1974-12-01 83.4605597964377 1975-01-01 81.9796954314721 1975-02-01 82.4873096446700 1975-03-01 83.7974683544304 1975-04-01 84.0506329113924 1975-05-01 84.0909090909091 1975-06-01 83.3753148614610 1975-07-01 84.1309823677582 1975-08-01 85.1385390428212 1975-09-01 84.6733668341708 1975-10-01 84.6733668341708 1975-11-01 84.3828715365239 1975-12-01 82.8715365239295 1976-01-01 81.4536340852130 1976-02-01 82.6633165829146 1976-03-01 82.1608040201005 1976-04-01 82.9573934837093 1976-05-01 83.7500000000000 1976-06-01 83.5000000000000 1976-07-01 83.5000000000000 1976-08-01 84.0399002493766 1976-09-01 83.8308457711443 1976-10-01 85.5361596009975 1976-11-01 84.0796019900498 1976-12-01 80.0995024875622 1977-01-01 79.6019900497512 1977-02-01 80.2992518703242 1977-03-01 81.1414392059554 1977-04-01 82.1339950372208 1977-05-01 82.1782178217822 1977-06-01 82.6732673267327 1977-07-01 83.2098765432099 1977-08-01 81.7733990147783 1977-09-01 82.0197044334975 1977-10-01 82.3095823095823 1977-11-01 83.7438423645320 1977-12-01 81.3267813267813 1978-01-01 78.9731051344744 1978-02-01 80.2919708029197 1978-03-01 81.5533980582524 1978-04-01 81.0679611650486 1978-05-01 81.8401937046005 1978-06-01 83.0508474576271 1978-07-01 82.8087167070218 1978-08-01 81.8840579710145 1978-09-01 81.6867469879518 1978-10-01 82.8915662650602 1978-11-01 82.4940047961631 1978-12-01 81.0551558752998 1979-01-01 79.7136038186158 1979-02-01 79.5238095238095 1979-03-01 81.4726840855107 1979-04-01 81.9905213270142 1979-05-01 82.7423167848700 1979-06-01 83.2547169811321 1979-07-01 82.8235294117647 1979-08-01 82.3943661971831 1979-09-01 82.2014051522248 1979-10-01 82.4766355140187 1979-11-01 82.5174825174825 1979-12-01 81.6705336426914 1980-01-01 79.9539170506912 1980-02-01 80.6896551724138 1980-03-01 82.1917808219178 1980-04-01 83.5990888382688 1980-05-01 83.6734693877551 1980-06-01 83.4841628959276 1980-07-01 82.4324324324324 1980-08-01 82.9213483146068 1980-09-01 83.2214765100671 1980-10-01 83.0357142857143 1980-11-01 82.0000000000000 1980-12-01 81.3747228381375 1981-01-01 80.1762114537445 1981-02-01 80.9210526315789 1981-03-01 82.3529411764706 1981-04-01 82.4295010845987 1981-05-01 82.5431034482759 1981-06-01 82.3655913978494 1981-07-01 81.9742489270386 1981-08-01 82.9059829059829 1981-09-01 82.3404255319149 1981-10-01 81.9915254237288 1981-11-01 81.4736842105263 1981-12-01 80.0420168067227 1982-01-01 79.3750000000000 1982-02-01 80.9128630705394 1982-03-01 82.5102880658436 1982-04-01 81.4432989690722 1982-05-01 81.5195071868583 1982-06-01 81.5573770491803 1982-07-01 82.4130879345603 1982-08-01 82.5203252032520 1982-09-01 82.3529411764706 1982-10-01 81.4516129032258 1982-11-01 80.5220883534136 1982-12-01 80.1603206412826 1983-01-01 79.9204771371769 1983-02-01 79.0927021696252 1983-03-01 79.5677799607073 1983-04-01 81.0176125244618 1983-05-01 82.2612085769980 1983-06-01 82.7184466019418 1983-07-01 82.1705426356589 1983-08-01 80.9248554913295 1983-09-01 81.1900191938580 1983-10-01 80.9523809523810 1983-11-01 80.6451612903226 1983-12-01 79.6226415094340 1984-01-01 79.1353383458646 1984-02-01 79.4392523364486 1984-03-01 80.0000000000000 1984-04-01 80.1104972375690 1984-05-01 80.1470588235294 1984-06-01 80.0731261425960 1984-07-01 80.4744525547445 1984-08-01 80.0362976406534 1984-09-01 79.7468354430380 1984-10-01 79.9638989169675 1984-11-01 79.8561151079137 1984-12-01 78.4946236559140 1985-01-01 78.2531194295900 1985-02-01 78.3303730017762 1985-03-01 79.6819787985866 1985-04-01 80.8098591549296 1985-05-01 80.5263157894737 1985-06-01 79.6847635726795 1985-07-01 79.4425087108014 1985-08-01 79.6521739130435 1985-09-01 79.5847750865052 1985-10-01 79.6551724137931 1985-11-01 79.0017211703959 1985-12-01 77.8350515463918 1986-01-01 77.8156996587031 1986-02-01 77.5891341256367 1986-03-01 78.6554621848740 1986-04-01 79.4314381270903 1986-05-01 80.1666666666666 1986-06-01 79.0349417637271 1986-07-01 79.4361525704809 1986-08-01 80.0330033003300 1986-09-01 78.7828947368421 1986-10-01 78.5597381342062 1986-11-01 79.1190864600326 1986-12-01 78.3034257748776 1987-01-01 77.7597402597402 1987-02-01 76.7366720516963 1987-03-01 77.6886035313002 1987-04-01 78.2400000000000 1987-05-01 79.7448165869219 1987-06-01 79.6825396825397 1987-07-01 78.6392405063291 1987-08-01 78.9889415481832 1987-09-01 78.7401574803150 1987-10-01 79.0297339593114 1987-11-01 79.2834890965732 1987-12-01 78.0715396578538 1988-01-01 77.1251931993818 1988-02-01 78.1538461538461 1988-03-01 78.7136294027565 1988-04-01 78.4732824427481 1988-05-01 79.5731707317073 1988-06-01 79.6042617960426 1988-07-01 78.9074355083460 1988-08-01 79.2424242424242 1988-09-01 79.4871794871795 1988-10-01 78.6144578313253 1988-11-01 78.7106446776612 1988-12-01 78.8922155688623 1989-01-01 77.8443113772455 1989-02-01 78.0923994038748 1989-03-01 79.3768545994065 1989-04-01 79.4074074074074 1989-05-01 79.6159527326440 1989-06-01 80.2359882005900 1989-07-01 80.4411764705882 1989-08-01 80.2052785923754 1989-09-01 79.9414348462665 1989-10-01 80.5555555555556 1989-11-01 80.4664723032070 1989-12-01 80.2919708029197 1990-01-01 79.1001451378810 1990-02-01 79.4500723589001 1990-03-01 80.4913294797688 1990-04-01 80.5194805194805 1990-05-01 81.1510791366906 1990-06-01 81.0071942446043 1990-07-01 81.1781609195402 1990-08-01 80.9455587392550 1990-09-01 81.0000000000000 1990-10-01 81.6239316239316 1990-11-01 81.5078236130868 1990-12-01 81.5078236130868 1991-01-01 80.7637906647808 1991-02-01 81.1267605633803 1991-03-01 81.9971870604782 1991-04-01 81.7158931082982 1991-05-01 82.4191279887482 1991-06-01 82.6086956521739 1991-07-01 81.7927170868347 1991-08-01 81.9580419580420 1991-09-01 82.8212290502793 1991-10-01 83.1005586592179 1991-11-01 82.9608938547486 1991-12-01 82.7731092436975 1992-01-01 82.2468793342580 1992-02-01 81.6044260027662 1992-03-01 82.5966850828729 1992-04-01 82.1823204419890 1992-05-01 82.3691460055096 1992-06-01 82.1182943603852 1992-07-01 81.5934065934066 1992-08-01 82.4417009602195 1992-09-01 82.4897400820794 1992-10-01 82.6502732240437 1992-11-01 83.0832196452933 1992-12-01 82.9467939972715 1993-01-01 82.3129251700680 1993-02-01 82.5203252032520 1993-03-01 82.2493224932249 1993-04-01 81.5468113975576 1993-05-01 81.7320703653586 1993-06-01 82.5203252032520 1993-07-01 82.5203252032520 1993-08-01 82.9268292682927 1993-09-01 82.6322930800543 1993-10-01 81.5468113975576 1993-11-01 81.4111261872456 1993-12-01 81.3858695652174 1994-01-01 80.1899592944369 1994-02-01 81.0040705563094 1994-03-01 81.4111261872456 1994-04-01 81.3605442176871 1994-05-01 81.7934782608696 1994-06-01 81.5217391304348 1994-07-01 81.8181818181818 1994-08-01 81.9293478260870 1994-09-01 81.6824966078697 1994-10-01 81.0298102981030 1994-11-01 80.9201623815968 1994-12-01 80.6233062330624 1995-01-01 79.8648648648649 1995-02-01 79.7570850202429 1995-03-01 80.7277628032345 1995-04-01 81.3765182186235 1995-05-01 81.2920592193809 1995-06-01 80.9139784946236 1995-07-01 81.0483870967742 1995-08-01 81.0738255033557 1995-09-01 81.5261044176707 1995-10-01 81.4171122994652 1995-11-01 81.2834224598930 1995-12-01 81.4171122994652 1996-01-01 79.6271637816245 1996-02-01 79.2276964047936 1996-03-01 79.9202127659574 1996-04-01 80.4521276595745 1996-05-01 80.5039787798408 1996-06-01 80.6622516556291 1996-07-01 81.3492063492064 1996-08-01 80.7387862796834 1996-09-01 81.2911725955204 1996-10-01 81.9973718791064 1996-11-01 82.0445609436435 1996-12-01 81.1518324607330 1997-01-01 80.2325581395349 1997-02-01 80.1546391752577 1997-03-01 81.3144329896907 1997-04-01 81.5483870967742 1997-05-01 81.9587628865979 1997-06-01 81.8998716302952 1997-07-01 81.2580231065468 1997-08-01 80.8974358974359 1997-09-01 80.2816901408451 1997-10-01 80.1536491677337 1997-11-01 80.2816901408451 1997-12-01 80.9218950064020 1998-01-01 80.2043422733078 1998-02-01 79.3367346938776 1998-03-01 79.7452229299363 1998-04-01 79.4904458598726 1998-05-01 80.6122448979592 1998-06-01 80.0254452926209 1998-07-01 79.7211660329531 1998-08-01 79.4676806083650 1998-09-01 79.2929292929293 1998-10-01 79.5712484237074 1998-11-01 79.3450881612091 1998-12-01 80.2267002518892 1999-01-01 80.4265997490590 1999-02-01 79.8245614035088 1999-03-01 79.9498746867168 1999-04-01 79.3750000000000 1999-05-01 79.0523690773067 1999-06-01 79.0523690773067 1999-07-01 78.4557907845579 1999-08-01 79.2288557213930 1999-09-01 80.3726708074534 1999-10-01 80.1488833746898 1999-11-01 79.1563275434243 1999-12-01 78.6600496277916 2000-01-01 78.5803237858032 2000-02-01 78.1094527363184 2000-03-01 78.3042394014963 2000-04-01 78.0274656679151 2000-05-01 78.0548628428928 2000-06-01 77.6529338327091 2000-07-01 77.8750000000000 2000-08-01 79.1250000000000 2000-09-01 79.9749687108886 2000-10-01 79.1979949874686 2000-11-01 78.5894206549118 2000-12-01 78.4634760705290 2001-01-01 77.9746835443038 2001-02-01 78.0177890724269 2001-03-01 78.8535031847134 2001-04-01 77.7493606138107 2001-05-01 77.1099744245524 2001-06-01 77.3946360153257 2001-07-01 77.2669220945083 2001-08-01 77.8343949044586 2001-09-01 77.8625954198473 2001-10-01 77.3130544993663 2001-11-01 76.6118836915297 2001-12-01 76.7383059418458 2002-01-01 77.5969962453066 2002-02-01 77.4032459425718 2002-03-01 77.4314214463840 2002-04-01 76.9613947696140 2002-05-01 76.9230769230769 2002-06-01 76.1433868974042 2002-07-01 76.2607626076261 2002-08-01 76.3480392156863 2002-09-01 77.5335775335776 2002-10-01 77.9805352798054 2002-11-01 76.1846901579587 2002-12-01 76.8203883495146 2003-01-01 77.1463119709794 2003-02-01 76.5342960288809 2003-03-01 76.7664670658682 2003-04-01 76.6746411483254 2003-05-01 76.9322235434007 2003-06-01 77.2781065088757 2003-07-01 77.8301886792453 2003-08-01 78.0000000000000 2003-09-01 77.5438596491228 2003-10-01 77.6223776223776 2003-11-01 78.1649245063879 2003-12-01 78.5631517960602 2004-01-01 77.5604142692750 2004-02-01 77.6119402985075 2004-03-01 78.0320366132723 2004-04-01 78.0182232346241 2004-05-01 78.2065834279228 2004-06-01 78.3691959229898 2004-07-01 78.4667418263810 2004-08-01 78.7878787878788 2004-09-01 78.1250000000000 2004-10-01 78.2608695652174 2004-11-01 78.7541713014460 2004-12-01 78.8482834994463 2005-01-01 78.5160575858250 2005-02-01 77.9005524861878 2005-03-01 79.0286975717439 2005-04-01 79.1620727673650 2005-05-01 78.9010989010989 2005-06-01 78.5714285714286 2005-07-01 79.2763157894737 2005-08-01 79.9781181619256 2005-09-01 79.8034934497816 2005-10-01 78.9301310043668 2005-11-01 78.6026200873362 2005-12-01 78.7812840043526 2006-01-01 78.4548422198041 2006-02-01 78.9130434782609 2006-03-01 80.1518438177874 2006-04-01 80.1086956521739 2006-05-01 80.9110629067245 2006-06-01 80.2603036876356 2006-07-01 80.5194805194805 2006-08-01 80.7150595882990 2006-09-01 80.2816901408451 2006-10-01 79.7399783315276 2006-11-01 79.7180043383948 2006-12-01 80.6731813246471 2007-01-01 81.1361200428724 2007-02-01 81.6523605150214 2007-03-01 80.9881847475832 2007-04-01 81.2030075187970 2007-05-01 81.7596566523605 2007-06-01 81.4377682403434 2007-07-01 81.9742489270386 2007-08-01 81.8863879957128 2007-09-01 81.6523605150214 2007-10-01 81.7792068595927 2007-11-01 81.6523605150214 2007-12-01 81.3304721030043 2008-01-01 81.4377682403434 2008-02-01 81.6523605150214 2008-03-01 81.0955961331901 2008-04-01 80.9881847475832 2008-05-01 81.9548872180451 2008-06-01 81.4178302900107 2008-07-01 81.1827956989247 2008-08-01 81.3978494623656 2008-09-01 81.9160387513455 2008-10-01 82.2198275862069 2008-11-01 81.7494600431965 2008-12-01 80.8855291576674 2009-01-01 81.4054054054054 2009-02-01 81.0400866738895 2009-03-01 80.5856832971800 2009-04-01 79.8045602605863 2009-05-01 80.0000000000000 2009-06-01 79.5652173913044 2009-07-01 79.3253536452666 2009-08-01 79.3253536452666 2009-09-01 79.7826086956522 2009-10-01 80.1086956521739 2009-11-01 79.1077257889010 2009-12-01 79.6517954298150 2010-01-01 80.1302931596091 2010-02-01 79.3478260869565 2010-03-01 79.2616720955483 2010-04-01 78.7418655097614 2010-05-01 79.0899241603467 2010-06-01 79.6316359696641 2010-07-01 78.5482123510292 2010-08-01 78.5945945945946 2010-09-01 79.2432432432432 2010-10-01 78.7257019438445 2010-11-01 78.8336933045356 2010-12-01 79.2025862068966 2011-01-01 79.2473118279570 2011-02-01 79.4212218649518 2011-03-01 79.0722761596548 2011-04-01 79.2025862068966 2011-05-01 79.6336206896552 2011-06-01 79.7631862217438 2011-07-01 78.5560344827586 2011-08-01 78.4482758620690 2011-09-01 78.9924973204716 2011-10-01 79.2473118279570 2011-11-01 79.8491379310345 2011-12-01 79.3103448275862 2012-01-01 78.8108108108108 2012-02-01 78.5714285714286 2012-03-01 78.2372143634385 2012-04-01 77.5109170305677 2012-05-01 78.7513691128149 2012-06-01 79.6926454445664 2012-07-01 78.9415656008820 2012-08-01 78.6031042128603 2012-09-01 78.9766407119021 2012-10-01 79.8216276477146 2012-11-01 79.6192609182531 2012-12-01 78.8526434195726 2013-01-01 78.8461538461538 2013-02-01 80.0000000000000 2013-03-01 80.0456100342075 2013-04-01 79.0617848970252 2013-05-01 79.2192881745121 2013-06-01 80.0000000000000 2013-07-01 79.7001153402538 2013-08-01 79.3981481481482 2013-09-01 80.2784222737819 2013-10-01 80.4423748544820 2013-11-01 80.8411214953271 2013-12-01 80.5847953216374 2014-01-01 81.3898704358068 2014-02-01 81.5384615384615 2014-03-01 81.3760379596679 2014-04-01 80.8104886769964 2014-05-01 81.2425328554361 2014-06-01 81.5789473684211 2014-07-01 81.7307692307692 2014-08-01 81.5440289505428 2014-09-01 82.1039903264812 2014-10-01 82.1385176184690 2014-11-01 81.7073170731707 2014-12-01 82.0073439412485 2015-01-01 82.3095823095823 2015-02-01 82.6140567200986 2015-03-01 82.0766378244746 2015-04-01 81.3118811881188 2015-05-01 81.8858560794045 2015-06-01 82.5870646766169 2015-07-01 83.1880448318804 2015-08-01 82.8963795255930 2015-09-01 83.2080200501253 2015-10-01 82.9145728643216 2015-11-01 82.8499369482976 2015-12-01 82.6801517067004 2016-01-01 82.4650571791614 2016-02-01 82.9299363057325 2016-03-01 83.0140485312899 2016-04-01 83.1202046035806 2016-05-01 83.8668373879641 2016-06-01 83.7179487179487 2016-07-01 83.6970474967908 2016-08-01 83.7837837837838 2016-09-01 84.4272844272844 2016-10-01 84.6451612903226 2016-11-01 83.5917312661499 2016-12-01 83.8292367399741 2017-01-01 84.3060959792477 2017-02-01 84.5253576072822 2017-03-01 84.3750000000000 2017-04-01 84.0938722294654 2017-05-01 84.5953002610966 2017-06-01 84.9673202614379 2017-07-01 85.0589777195282 2017-08-01 85.4712041884817 2017-09-01 86.1074705111402 2017-10-01 85.6955380577428 2017-11-01 85.6955380577428 2017-12-01 85.8267716535433 2018-01-01 85.7894736842105 2018-02-01 85.7707509881423 2018-03-01 86.3936591809776 2018-04-01 86.2796833773087 2018-05-01 87.0712401055409 2018-06-01 86.6402116402116 2018-07-01 85.6953642384106 2018-08-01 85.8465608465608 2018-09-01 86.5079365079365