Month	Percent
1978-02-01	3.76781470351132
1978-03-01	3.27292060462678
1978-04-01	3.43053688281007
1978-05-01	3.24636397761797
1978-06-01	3.75253839922211
1978-07-01	3.77228185220133
1978-08-01	3.46999708423874
1978-09-01	3.94528985039039
1978-10-01	3.97642963598690
1978-11-01	3.50241851373453
1978-12-01	3.54841485312944
1979-01-01	3.63702415949955
1979-02-01	4.38839153293787
1979-03-01	3.77653899189245
1979-04-01	3.91917370036239
1979-05-01	3.46965634343360
1979-06-01	3.36380614438319
1979-07-01	3.66583381872975
1979-08-01	2.88517958030564
1979-09-01	3.26784580143550
1979-10-01	3.06323438793351
1979-11-01	2.89797510657234
1979-12-01	2.81933821023666
1980-01-01	2.88417896854429
1980-02-01	2.77503616951798
1980-03-01	2.82747642799367
1980-04-01	2.60028797956586
1980-05-01	3.05226120122377
1980-06-01	2.98984156384225
1980-07-01	2.98344630072311
1980-08-01	3.19866628797904
1980-09-01	2.99583170648106
1980-10-01	2.87641896633134
1980-11-01	2.90854795514796
1980-12-01	3.18013823584009
1981-01-01	3.18026934288165
1981-02-01	3.26116600248456
1981-03-01	3.24424700915857
1981-04-01	3.11707729899176
1981-05-01	3.55429421149101
1981-06-01	3.68763000223286
1981-07-01	3.78300634951240
1981-08-01	3.78496335736865
1981-09-01	4.00558882906361
1981-10-01	3.32739188056361
1981-11-01	3.62153425429028
1981-12-01	3.18598093738238
1982-01-01	3.06201971477183
1982-02-01	3.18482548616529
1982-03-01	3.46207687412131
1982-04-01	3.23104216635945
1982-05-01	3.11124030128887
1982-06-01	3.11902107950881
1982-07-01	3.17751705753104
1982-08-01	3.59572364865538
1982-09-01	3.89929761771136
1982-10-01	4.71346875351040
1982-11-01	5.49790991645266
1982-12-01	5.30352585215472
1983-01-01	6.02582653007144
1983-02-01	5.89924817815816
1983-03-01	6.73498794054822
1983-04-01	7.46665468523120
1983-05-01	7.10760753681117
1983-06-01	7.41607283527724
1983-07-01	6.78994779464961
1983-08-01	6.84035535644152
1983-09-01	7.51267448700452
1983-10-01	7.14946439131124
1983-11-01	6.47046263560071
1983-12-01	6.36414356911034
1984-01-01	7.57176868048882
1984-02-01	6.58450480005418
1984-03-01	6.88773879533108
1984-04-01	6.46236959431851
1984-05-01	5.96495205320812
1984-06-01	6.20425466169808
1984-07-01	5.80178952033052
1984-08-01	6.30863887549162
1984-09-01	6.51526965005172
1984-10-01	5.93712714136212
1984-11-01	6.01657100554480
1984-12-01	6.09283803782658
1985-01-01	6.75638394699216
1985-02-01	6.41005107694862
1985-03-01	7.18346075707120
1985-04-01	7.06674271717043
1985-05-01	7.52676000159566
1985-06-01	7.71104844035163
1985-07-01	7.47956677063004
1985-08-01	7.28824044065732
1985-09-01	7.79825959769868
1985-10-01	7.04415559097791
1985-11-01	6.32860426460533
1985-12-01	6.04330680405017
1986-01-01	5.91599669879666
1986-02-01	5.75996429183734
1986-03-01	5.79502908326698
1986-04-01	5.39179892610128
1986-05-01	5.76879166273191
1986-06-01	5.32125569238649
1986-07-01	5.53947432954291
1986-08-01	6.13416381746436
1986-09-01	6.78154327753924
1986-10-01	6.46262562334413
1986-11-01	7.21189678314802
1986-12-01	7.20504538439915
1987-01-01	7.31134477501572
1987-02-01	7.02446964603742
1987-03-01	6.76742802232326
1987-04-01	6.82077446792948
1987-05-01	6.79000381478894
1987-06-01	6.78100660577112
1987-07-01	6.54782513702734
1987-08-01	6.16902031580999
1987-09-01	6.47817310027114
1987-10-01	7.19345936424692
1987-11-01	7.40677909261192
1987-12-01	6.13357172689683
1988-01-01	6.71336690421760
1988-02-01	7.09563176771861
1988-03-01	7.73573596173189
1988-04-01	7.46102082372012
1988-05-01	7.35556963193442
1988-06-01	6.97228566171966
1988-07-01	7.07423531823638
1988-08-01	7.06789569054185
1988-09-01	7.10819124564961
1988-10-01	6.22605339327455
1988-11-01	5.47861204775112
1988-12-01	5.74780416744037
1989-01-01	6.49345210720902
1989-02-01	7.28517780878852
1989-03-01	6.86583382788799
1989-04-01	6.09595023571100
1989-05-01	6.50267962549741
1989-06-01	5.47689927242437
1989-07-01	6.37529728896104
1989-08-01	5.62484842199202
1989-09-01	6.00402042093859
1989-10-01	5.44390838141042
1989-11-01	5.49647407963394
1989-12-01	5.53176724940293
1990-01-01	5.72396189965515
1990-02-01	6.54549797348015
1990-03-01	6.28873990581252
1990-04-01	6.54631751600436
1990-05-01	6.74736889220969
1990-06-01	6.51501567664737
1990-07-01	6.62455862198476
1990-08-01	6.28434321812922
1990-09-01	6.86502524567293
1990-10-01	6.34851794458888
1990-11-01	6.66755224867004
1990-12-01	6.43908021855485
1991-01-01	7.75477655207738
1991-02-01	8.08409159841276
1991-03-01	8.83374311281886
1991-04-01	9.33575548792693
1991-05-01	9.26425343409657
1991-06-01	9.07658925447154
1991-07-01	9.71692615720575
1991-08-01	10.24942723179780
1991-09-01	11.45668606746520
1991-10-01	10.49755801660430
1991-11-01	10.65316201899020
1991-12-01	10.57799930168320
1992-01-01	11.84126075849510
1992-02-01	11.03277191564300
1992-03-01	11.06978407220950
1992-04-01	11.15557388144670
1992-05-01	11.36642272607300
1992-06-01	10.64177298206050
1992-07-01	11.95887081139760
1992-08-01	11.96651286145150
1992-09-01	12.33654659411980
1992-10-01	12.79735629985410
1992-11-01	13.31319206714760
1992-12-01	12.22310588912210
1993-01-01	12.85936129041240
1993-02-01	14.08789481394020
1993-03-01	14.12488053587140
1993-04-01	13.15772389531440
1993-05-01	13.79611384380770
1993-06-01	13.60795109802030
1993-07-01	13.53332209864310
1993-08-01	14.09945769961420
1993-09-01	13.44877154420380
1993-10-01	13.96529646788900
1993-11-01	13.77497237079270
1993-12-01	13.92945378633010
1994-01-01	14.22243486617250
1994-02-01	13.69883147545560
1994-03-01	13.02542112593390
1994-04-01	11.24693077075540
1994-05-01	11.09316382839210
1994-06-01	11.39780205779640
1994-07-01	10.88848455741200
1994-08-01	10.68325256311550
1994-09-01	11.21720933937690
1994-10-01	10.02469125027470
1994-11-01	10.41047755597020
1994-12-01	10.16355143512470
1995-01-01	9.99905830154958
1995-02-01	10.38579584623120
1995-03-01	9.07224896768903
1995-04-01	8.60784053357233
1995-05-01	9.39568342229234
1995-06-01	9.50612521696866
1995-07-01	8.43552844049852
1995-08-01	9.02224614124182
1995-09-01	9.54071926176167
1995-10-01	9.12880758226581
1995-11-01	9.22684891832753
1995-12-01	8.68178300480941
1996-01-01	9.39480171447988
1996-02-01	9.71519921224365
1996-03-01	9.36463527787672
1996-04-01	9.03441092364570
1996-05-01	7.98651630602665
1996-06-01	8.65920523915950
1996-07-01	9.08369199762147
1996-08-01	9.76882200262212
1996-09-01	9.36595837468664
1996-10-01	8.71973483012776
1996-11-01	9.22610155069709
1996-12-01	8.03856928391392
1997-01-01	8.81039309588997
1997-02-01	8.81558562378721
1997-03-01	8.13938562031166
1997-04-01	8.10734147945393
1997-05-01	7.61662965006281
1997-06-01	7.71199235151754
1997-07-01	7.99577077368600
1997-08-01	8.65987043820970
1997-09-01	8.07342958685802
1997-10-01	7.15027892424393
1997-11-01	7.25840140715538
1997-12-01	7.35923586438806
1998-01-01	7.80500589952453
1998-02-01	8.14679227256470
1998-03-01	7.29646100108573
1998-04-01	6.63469032230205
1998-05-01	7.69264575923355
1998-06-01	7.22297418198364
1998-07-01	7.50876062299815
1998-08-01	6.96431687709024
1998-09-01	7.04208459365246
1998-10-01	7.23108925456085
1998-11-01	7.32023182721676
1998-12-01	6.20256933736873
1999-01-01	6.79251275205255
1999-02-01	8.02928383829617
1999-03-01	7.60005141685134
1999-04-01	6.32674570689028
1999-05-01	6.97220860974008
1999-06-01	6.12585543295260
1999-07-01	5.99511418203322
1999-08-01	6.11770916294995
1999-09-01	6.54265960517824
1999-10-01	6.04888657091398
1999-11-01	5.99276556422988
1999-12-01	5.96475348241474
2000-01-01	6.38434555038636
2000-02-01	6.36055161669737
2000-03-01	5.87936383804074
2000-04-01	5.50271566143653
2000-05-01	5.03245370490678
2000-06-01	5.43368097664127
2000-07-01	4.75344324678094
2000-08-01	5.02299417522576
2000-09-01	5.63772792072880
2000-10-01	4.73014424816919
2000-11-01	4.68069431465842
2000-12-01	4.52687778013652
2001-01-01	5.27700386847185
2001-02-01	5.49504315593434
2001-03-01	4.67580266040118
2001-04-01	5.29164600755371
2001-05-01	5.64036737959574
2001-06-01	6.26197161305558
2001-07-01	5.62817298864880
2001-08-01	5.73940281101504
2001-09-01	6.00445167991090
2001-10-01	5.65583955030116
2001-11-01	5.40558730079496
2001-12-01	5.40267519146867
2002-01-01	6.05339218203826
2002-02-01	5.88769923808051
2002-03-01	5.36308161175704
2002-04-01	4.76187724619690
2002-05-01	5.37636545197499
2002-06-01	5.20514104480991
2002-07-01	5.00163646222700
2002-08-01	4.89096037735312
2002-09-01	4.87079870607199
2002-10-01	4.58446138388816
2002-11-01	4.70567815031942
2002-12-01	4.91688122283902
2003-01-01	5.24242602490361
2003-02-01	4.74540693098620
2003-03-01	4.14527304017201
2003-04-01	4.16524207304757
2003-05-01	4.18766037183640
2003-06-01	4.21805660144133
2003-07-01	3.97967790859855
2003-08-01	4.18745802331044
2003-09-01	4.30382993103400
2003-10-01	4.41177737544999
2003-11-01	3.76002610260890
2003-12-01	3.72068375281073
2004-01-01	4.22972992109065
2004-02-01	4.32294616731326
2004-03-01	3.35226832751188
2004-04-01	4.21241201435244
2004-05-01	3.82330762122217
2004-06-01	3.83261433607034
2004-07-01	3.76744543211963
2004-08-01	4.04670289148617
2004-09-01	4.29470871542074
2004-10-01	3.68636052062475
2004-11-01	3.74866991017498
2004-12-01	3.33381188434318
2005-01-01	3.91007238365156
2005-02-01	4.18851288200891
2005-03-01	3.70664163182215
2005-04-01	4.04316986025260
2005-05-01	3.69228269067819
2005-06-01	3.22133748374147
2005-07-01	3.50601368023225
2005-08-01	3.40986655879631
2005-09-01	3.87312349096397
2005-10-01	3.36632682971516
2005-11-01	3.97785587865120
2005-12-01	3.52771108111349
2006-01-01	3.48116651066595
2006-02-01	4.06546858583769
2006-03-01	3.48376926931129
2006-04-01	3.32446071740639
2006-05-01	3.85931222322723
2006-06-01	4.12455041458614
2006-07-01	3.68547313238790
2006-08-01	3.51185088785944
2006-09-01	3.75161476408921
2006-10-01	3.00765049552574
2006-11-01	3.26371772542044
2006-12-01	3.02312045488090
2007-01-01	3.64622961726831
2007-02-01	3.61368274446862
2007-03-01	2.81854391881174
2007-04-01	2.90852443087009
2007-05-01	2.87566348027190
2007-06-01	2.75378203154109
2007-07-01	2.28320572548491
2007-08-01	2.58322457648599
2007-09-01	2.36386883155578
2007-10-01	2.92808802988012
2007-11-01	2.33416353318112
2007-12-01	2.71556734674286
2008-01-01	2.93252269790890
2008-02-01	3.22797529914670
2008-03-01	3.38861428773068
2008-04-01	3.31297629436680
2008-05-01	3.09793356833179
2008-06-01	3.10489105380238
2008-07-01	3.06874259087509
2008-08-01	2.32529082196385
2008-09-01	3.14711708865115
2008-10-01	2.85365911529414
2008-11-01	2.60316212234916
2008-12-01	3.59935399816271
2009-01-01	3.81427897137992
2009-02-01	3.56505640610991
2009-03-01	3.60161449811970
2009-04-01	3.52710500905592
2009-05-01	3.71852938810522
2009-06-01	3.60631447396055
2009-07-01	3.83997148720357
2009-08-01	3.83580669201884
2009-09-01	3.81554923794280
2009-10-01	3.52693490394841
2009-11-01	3.84937029779132
2009-12-01	3.74025836581618
2010-01-01	4.42587978519664
2010-02-01	4.80604501253073
2010-03-01	4.47755359088771
2010-04-01	4.12716922721665
2010-05-01	3.91047114550634
2010-06-01	3.56559370306595
2010-07-01	3.66756746275856
2010-08-01	3.45500518094168
2010-09-01	3.70178209858744
2010-10-01	3.28719211020425
2010-11-01	2.83437984667133
2010-12-01	2.56405446732182
2011-01-01	3.46900471195368
2011-02-01	3.75034938567939
2011-03-01	3.38414352876076
2011-04-01	4.06392266327813
2011-05-01	3.57073350004888
2011-06-01	3.20226605486014
2011-07-01	3.31054400544083
2011-08-01	4.45945958575966
2011-09-01	3.97464184867409
2011-10-01	4.17484197556344
2011-11-01	3.73065616104167
2011-12-01	2.95415036409666
2012-01-01	3.49064219679684
2012-02-01	4.18556307051142
2012-03-01	3.85431688590072
2012-04-01	3.13503703109188
2012-05-01	3.26535891506260
2012-06-01	3.51358584617633
2012-07-01	3.61498432684861
2012-08-01	4.07657364109529
2012-09-01	4.46319929046951
2012-10-01	3.99016384304896
2012-11-01	3.64633142337512
2012-12-01	3.45374429812360
2013-01-01	4.75647630988199
2013-02-01	4.45107456721983
2013-03-01	4.45078434086760
2013-04-01	3.89970600616188
2013-05-01	3.86433972155297
2013-06-01	4.32762616503510
2013-07-01	4.42330880242681
2013-08-01	4.56220499393205
2013-09-01	4.75152540219809
2013-10-01	4.60625773414149
2013-11-01	3.96428557954776
2013-12-01	4.04538813740443
2014-01-01	4.87827810638241
2014-02-01	4.94327345170696
2014-03-01	4.07111096240357
2014-04-01	4.23436795628852
2014-05-01	3.88235186784315
2014-06-01	4.31971797649810
2014-07-01	4.17637719025885
2014-08-01	4.27958462485290
2014-09-01	3.56115662771264
2014-10-01	4.35439293040810
2014-11-01	4.71813924515928
2014-12-01	4.40684761698877
2015-01-01	5.27412715606132
2015-02-01	5.29334876353579
2015-03-01	4.53712305414401
2015-04-01	4.73259620816959
2015-05-01	4.52986771882175
2015-06-01	4.69535307782927
2015-07-01	4.81258447814246
2015-08-01	5.30420636641950
2015-09-01	4.99415877456258
2015-10-01	4.96054284057558
2015-11-01	4.90414574790565
2015-12-01	3.93258880209590
2016-01-01	5.30636809895025
2016-02-01	5.08665108793301
2016-03-01	5.07810455102371
2016-04-01	4.85684729593382
2016-05-01	5.00453225050539
2016-06-01	4.49549670710155
2016-07-01	4.84781536623945
2016-08-01	5.16019813487234
2016-09-01	4.84484182576663
2016-10-01	4.44763147710261
2016-11-01	4.35787555658820
2016-12-01	4.25915115463115
2017-01-01	4.32267860868233
2017-02-01	4.72374395280294
2017-03-01	4.30256533939830
2017-04-01	4.21276713204822
2017-05-01	4.36061567400869
2017-06-01	4.75249339435830
2017-07-01	4.41789576869772
2017-08-01	4.22481192683772
2017-09-01	4.60864547732232
2017-10-01	4.29730953561646
2017-11-01	3.93555644520220
2017-12-01	4.32545697180813
2018-01-01	4.52410443902052
2018-02-01	5.02099134431154
2018-03-01	5.22374501164765
2018-04-01	4.97636888453742
2018-05-01	4.43811768563379
2018-06-01	5.30779503910012
2018-07-01	4.94396949900231
2018-08-01	4.58360271904814
2018-09-01	4.33485597148854