Month	Percent
1968-01-01	16.8483063328424
1968-02-01	17.1815239776405
1968-03-01	15.5157214222745
1968-04-01	14.6756677428823
1968-05-01	14.3652887716212
1968-06-01	14.0304628002343
1968-07-01	14.0391927464171
1968-08-01	14.4609991235758
1968-09-01	14.6818447168710
1968-10-01	14.4272806761877
1968-11-01	15.0800582241630
1968-12-01	16.0407569141194
1969-01-01	16.8944460599011
1969-02-01	17.1702498547356
1969-03-01	15.5787641427328
1969-04-01	14.6751740139211
1969-05-01	14.3353605560382
1969-06-01	14.1823444283647
1969-07-01	14.2237640936687
1969-08-01	14.7271152180191
1969-09-01	14.8788927335640
1969-10-01	15.1209677419355
1969-11-01	15.4333429311834
1969-12-01	15.8424381828637
1970-01-01	16.5756966388969
1970-02-01	16.8532873959231
1970-03-01	15.0716332378224
1970-04-01	14.3429716576009
1970-05-01	14.4981412639405
1970-06-01	14.5755930265790
1970-07-01	14.2857142857143
1970-08-01	14.6932952924394
1970-09-01	14.8348519362187
1970-10-01	15.1023890784983
1970-11-01	15.2315998863313
1970-12-01	15.3714773697694
1971-01-01	15.6996587030717
1971-02-01	15.6054576463900
1971-03-01	14.3343741129719
1971-04-01	13.6337868480726
1971-05-01	13.4691567628749
1971-06-01	13.9587454083074
1971-07-01	14.0395480225989
1971-08-01	14.4428772919605
1971-09-01	14.6843291995490
1971-10-01	14.7481001970166
1971-11-01	14.7679324894515
1971-12-01	14.8043906557838
1972-01-01	15.4430379746835
1972-02-01	15.2504220596511
1972-03-01	14.5388076490439
1972-04-01	13.7155705452501
1972-05-01	13.6924803591470
1972-06-01	13.8133931073130
1972-07-01	13.5390603280512
1972-08-01	14.0160976963641
1972-09-01	14.0915395284327
1972-10-01	14.3293529575118
1972-11-01	15.0388457269700
1972-12-01	14.9875104079933
1973-01-01	15.2908587257618
1973-02-01	15.1993355481728
1973-03-01	14.6213377556661
1973-04-01	13.8436032053053
1973-05-01	13.4546457127102
1973-06-01	13.5611907386990
1973-07-01	13.3094516395701
1973-08-01	13.8453069088907
1973-09-01	14.2189218921892
1973-10-01	14.0736668499175
1973-11-01	14.3249176728869
1973-12-01	14.8737650933041
1974-01-01	15.4983570646221
1974-02-01	15.3362493165664
1974-03-01	13.9109046187483
1974-04-01	13.7121005189839
1974-05-01	13.7131952017448
1974-06-01	13.7837101607192
1974-07-01	14.0871934604905
1974-08-01	14.2196846112017
1974-09-01	14.3168209036472
1974-10-01	14.1730141458107
1974-11-01	14.3517260125034
1974-12-01	14.9456521739130
1975-01-01	15.7766332339387
1975-02-01	15.7638136511376
1975-03-01	14.8158179848321
1975-04-01	14.4480519480519
1975-05-01	14.1776937618147
1975-06-01	14.6630727762803
1975-07-01	14.3974117012672
1975-08-01	14.5048439181916
1975-09-01	14.3817204301075
1975-10-01	14.1783029001074
1975-11-01	14.1783029001074
1975-12-01	14.0863965656024
1976-01-01	15.1271753681392
1976-02-01	15.1847884306374
1976-03-01	14.5649263721553
1976-04-01	14.3927233814874
1976-05-01	14.3925233644860
1976-06-01	14.3200000000000
1976-07-01	14.2895299145299
1976-08-01	14.4533333333333
1976-09-01	14.6581537642990
1976-10-01	14.7684938797233
1976-11-01	14.6581537642990
1976-12-01	15.0411905394632
1977-01-01	15.8704883227176
1977-02-01	15.8300132802125
1977-03-01	14.9150743099788
1977-04-01	14.8619957537155
1977-05-01	14.8716591690924
1977-06-01	14.7089947089947
1977-07-01	14.5618215514959
1977-08-01	14.9537648612946
1977-09-01	15.0883671854392
1977-10-01	15.3967835486422
1977-11-01	15.0764364786505
1977-12-01	15.1818661043753
1978-01-01	16.0728424386382
1978-02-01	15.7214455288842
1978-03-01	15.0316455696203
1978-04-01	14.5229309435952
1978-05-01	14.1430073606730
1978-06-01	14.3720441408303
1978-07-01	14.6649145860710
1978-08-01	15.1443569553806
1978-09-01	15.3462749213012
1978-10-01	15.3261723866911
1978-11-01	15.1348520555119
1978-12-01	15.4833638983495
1979-01-01	16.2437876013602
1979-02-01	16.1914726654460
1979-03-01	15.4870723426482
1979-04-01	14.8380355276907
1979-05-01	14.4795199582572
1979-06-01	14.0995569455304
1979-07-01	14.0547588005215
1979-08-01	14.6913258661110
1979-09-01	15.4526534859521
1979-10-01	15.0806032241290
1979-11-01	15.1609553478712
1979-12-01	15.3906047235920
1980-01-01	16.0830090791180
1980-02-01	16.4202334630350
1980-03-01	15.5739828971236
1980-04-01	15.0840879689521
1980-05-01	15.0787503227472
1980-06-01	14.6542827657379
1980-07-01	14.6618482188952
1980-08-01	15.1327661768497
1980-09-01	15.3371075656202
1980-10-01	15.1554071410223
1980-11-01	15.3352170562548
1980-12-01	15.4973014649190
1981-01-01	15.9569009748589
1981-02-01	15.8448895737031
1981-03-01	14.9781995383432
1981-04-01	14.6485377116470
1981-05-01	14.8347425057648
1981-06-01	14.4430217669654
1981-07-01	14.6478873239437
1981-08-01	15.0204708290686
1981-09-01	15.5163599182004
1981-10-01	15.5850792028615
1981-11-01	15.5810983397190
1981-12-01	15.9979555328393
1982-01-01	16.4072467466190
1982-02-01	16.1183371588880
1982-03-01	15.1337579617834
1982-04-01	14.3439490445860
1982-05-01	14.5653279105236
1982-06-01	14.8984771573604
1982-07-01	14.9530337649150
1982-08-01	15.1215805471125
1982-09-01	15.4605263157895
1982-10-01	15.4021244309560
1982-11-01	15.2640889562800
1982-12-01	15.3360282971198
1983-01-01	15.7124842370744
1983-02-01	15.9314343332493
1983-03-01	15.5068078668684
1983-04-01	14.7858942065491
1983-05-01	14.4726906619683
1983-06-01	14.4399799095932
1983-07-01	14.7664490205927
1983-08-01	15.1089952392884
1983-09-01	15.3403403403403
1983-10-01	15.4365774330748
1983-11-01	15.4211447138215
1983-12-01	15.7960509872532
1984-01-01	16.2128403697227
1984-02-01	16.2047440699126
1984-03-01	15.9181636726547
1984-04-01	15.2428393524284
1984-05-01	15.1741293532338
1984-06-01	15.0769995032290
1984-07-01	15.3999006458023
1984-08-01	15.4685176003966
1984-09-01	15.4912150457807
1984-10-01	15.7022749752720
1984-11-01	15.7725587144623
1984-12-01	16.1226508407517
1985-01-01	16.6584402764067
1985-02-01	16.9504071058475
1985-03-01	16.3582531458179
1985-04-01	15.6481025135535
1985-05-01	15.6665027053615
1985-06-01	15.7441574415744
1985-07-01	15.8554572271386
1985-08-01	16.1797201080285
1985-09-01	16.2095984329089
1985-10-01	16.3445069733301
1985-11-01	16.3774138352481
1985-12-01	16.7970660146699
1986-01-01	17.0981924767953
1986-02-01	17.3987310883358
1986-03-01	16.6910331384016
1986-04-01	15.8869395711501
1986-05-01	16.0126736534243
1986-06-01	16.1188215242269
1986-07-01	15.8610638814671
1986-08-01	15.9195541555609
1986-09-01	16.3482466747279
1986-10-01	16.5095479816292
1986-11-01	16.6747220879652
1986-12-01	17.1138506163887
1987-01-01	17.6527408838445
1987-02-01	17.7450507001449
1987-03-01	16.9597687304264
1987-04-01	16.3456909003370
1987-05-01	16.3658243080626
1987-06-01	16.3701923076923
1987-07-01	16.2946964242861
1987-08-01	16.1035226455787
1987-09-01	16.6027791087686
1987-10-01	16.7743479301268
1987-11-01	16.9094817291617
1987-12-01	17.3155003582517
1988-01-01	17.9175601620205
1988-02-01	17.9890397903264
1988-03-01	17.3342870767764
1988-04-01	16.6071853438020
1988-05-01	16.5716999050332
1988-06-01	16.3696840104538
1988-07-01	16.4650059311981
1988-08-01	16.5916093861105
1988-09-01	17.1516441920984
1988-10-01	17.2927002126152
1988-11-01	17.0990566037736
1988-12-01	17.3276676109537
1989-01-01	18.1260325702148
1989-02-01	17.9565832940066
1989-03-01	17.3503064592174
1989-04-01	16.5684657082253
1989-05-01	16.5137614678899
1989-06-01	16.3730326521024
1989-07-01	16.3696060037523
1989-08-01	16.7525773195876
1989-09-01	17.2163742690058
1989-10-01	17.1381809679682
1989-11-01	16.9356725146199
1989-12-01	17.1889616463985
1990-01-01	17.9672897196262
1990-02-01	17.7227028290858
1990-03-01	17.1575502571295
1990-04-01	16.6276894293732
1990-05-01	16.1463187325256
1990-06-01	16.2628145386766
1990-07-01	16.2628145386766
1990-08-01	16.8489643937631
1990-09-01	16.5389082462253
1990-10-01	16.0668678894822
1990-11-01	16.5389082462253
1990-12-01	16.7789914013479
1991-01-01	17.4175568973525
1991-02-01	17.3367418080409
1991-03-01	16.2839248434238
1991-04-01	16.0213308601901
1991-05-01	15.8601528131512
1991-06-01	15.7602406850266
1991-07-01	15.9842701827435
1991-08-01	16.1968576709797
1991-09-01	16.0359944623904
1991-10-01	16.0858527579045
1991-11-01	16.1007161007161
1991-12-01	16.2155910247513
1992-01-01	16.5895418787598
1992-02-01	16.4624277456647
1992-03-01	16.1081580771897
1992-04-01	15.4558074965294
1992-05-01	15.5124653739612
1992-06-01	15.8865575282453
1992-07-01	15.4484666820383
1992-08-01	15.6912442396313
1992-09-01	15.9336863918950
1992-10-01	15.5350978135788
1992-11-01	15.5013799448022
1992-12-01	15.6537753222836
1993-01-01	16.5247410817031
1993-02-01	16.3636363636364
1993-03-01	15.9383624655014
1993-04-01	15.4200230149597
1993-05-01	15.1229602390255
1993-06-01	15.2573529411765
1993-07-01	15.0700666207213
1993-08-01	15.3122130394858
1993-09-01	15.4163799036476
1993-10-01	15.1285583103765
1993-11-01	15.2592932537861
1993-12-01	15.5310851112640
1994-01-01	16.4449541284404
1994-02-01	16.4179104477612
1994-03-01	15.8897818599311
1994-04-01	15.4447253504941
1994-05-01	15.0103282074822
1994-06-01	15.1216154199174
1994-07-01	15.0068838916934
1994-08-01	15.0229357798165
1994-09-01	15.2612282309808
1994-10-01	15.3334861333945
1994-11-01	15.5891792755617
1994-12-01	15.7303370786517
1995-01-01	16.5024066009626
1995-02-01	16.6169382602708
1995-03-01	15.8715596330275
1995-04-01	15.3227659085688
1995-05-01	15.2328515714613
1995-06-01	15.1077487391105
1995-07-01	14.7544745296007
1995-08-01	14.9380449747591
1995-09-01	15.0126060050424
1995-10-01	14.9667659867064
1995-11-01	15.1924839596700
1995-12-01	15.4093097913323
1996-01-01	15.8872077028886
1996-02-01	15.9430277969217
1996-03-01	15.5172413793103
1996-04-01	14.8505747126437
1996-05-01	14.5971999081937
1996-06-01	14.4102799449289
1996-07-01	14.2430507695842
1996-08-01	14.3086816720257
1996-09-01	14.5742483360110
1996-10-01	14.6626893070216
1996-11-01	14.8989898989899
1996-12-01	14.7025040202159
1997-01-01	15.0515463917526
1997-02-01	15.2487961476726
1997-03-01	14.6721687299404
1997-04-01	14.2529263254533
1997-05-01	13.8895255558102
1997-06-01	13.8799816765918
1997-07-01	14.0073360843650
1997-08-01	14.3152099105299
1997-09-01	14.5475372279496
1997-10-01	14.6196150320807
1997-11-01	14.9014213663457
1997-12-01	14.7740307409956
1998-01-01	15.1904543368518
1998-02-01	15.4499540863177
1998-03-01	14.8555708390646
1998-04-01	14.4924207625172
1998-05-01	14.0955004591368
1998-06-01	13.9545558870783
1998-07-01	14.2922688690067
1998-08-01	14.4299151181464
1998-09-01	14.4987382427162
1998-10-01	14.4824420472802
1998-11-01	14.6134434503326
1998-12-01	14.6139705882353
1999-01-01	14.8105625717566
1999-02-01	15.1759025063233
1999-03-01	14.8906789413119
1999-04-01	14.5094426531552
1999-05-01	14.2199723884031
1999-06-01	14.1311852704258
1999-07-01	14.4994246260069
1999-08-01	14.4664213431463
1999-09-01	14.3941135893309
1999-10-01	14.4204231830727
1999-11-01	14.6930328811221
1999-12-01	14.6964121435143
2000-01-01	15.2128883774453
2000-02-01	15.3970080552359
2000-03-01	14.9043999078553
2000-04-01	14.5756457564576
2000-05-01	14.1770401106501
2000-06-01	14.3878256859580
2000-07-01	14.6020761245675
2000-08-01	14.4241864758828
2000-09-01	14.4108830989163
2000-10-01	14.3911439114391
2000-11-01	14.3713956170704
2000-12-01	14.6251441753172
2001-01-01	15.3117782909931
2001-02-01	15.4558074965294
2001-03-01	14.9560795191863
2001-04-01	14.3981481481482
2001-05-01	14.2658959537572
2001-06-01	14.6426092990978
2001-07-01	14.5799583429762
2001-08-01	14.4179588058320
2001-09-01	14.9733857903263
2001-10-01	14.9629972247919
2001-11-01	15.0092506938020
2001-12-01	15.3134397409207
2002-01-01	15.7358053302433
2002-02-01	15.7955865272938
2002-03-01	15.1522193818266
2002-04-01	14.7846332945285
2002-05-01	14.9534883720930
2002-06-01	14.9930264993026
2002-07-01	14.9139134481154
2002-08-01	14.6148475680707
2002-09-01	15.0895140664962
2002-10-01	14.9302325581395
2002-11-01	15.3810300629224
2002-12-01	15.4923005132991
2003-01-01	15.7403082671649
2003-02-01	15.8485273492286
2003-03-01	15.3092182030338
2003-04-01	15.0572831423895
2003-05-01	14.9731371174959
2003-06-01	14.9790013999067
2003-07-01	15.1564689397478
2003-08-01	15.1203552231830
2003-09-01	15.1996264300724
2003-10-01	15.1833683718757
2003-11-01	15.1132912870825
2003-12-01	15.3323970037453
2004-01-01	15.9569489939167
2004-02-01	16.1078546307151
2004-03-01	16.0655737704918
2004-04-01	15.3990170840159
2004-05-01	15.2963223237292
2004-06-01	15.4694835680751
2004-07-01	15.3954470781507
2004-08-01	15.2005629838142
2004-09-01	15.5451348182884
2004-10-01	15.4062940347581
2004-11-01	15.4261563747359
2004-12-01	15.7387831806436
2005-01-01	16.1138555633968
2005-02-01	16.3409465505062
2005-03-01	15.8887317303159
2005-04-01	15.4989384288747
2005-05-01	15.3954802259887
2005-06-01	15.3265739212450
2005-07-01	15.1958470976876
2005-08-01	15.2466367713004
2005-09-01	15.0436217873143
2005-10-01	14.9870191173000
2005-11-01	15.2610441767068
2005-12-01	15.5319148936170
2006-01-01	15.7595835305253
2006-02-01	15.7345971563981
2006-03-01	15.1880766501065
2006-04-01	14.8042704626335
2006-05-01	14.7191277553923
2006-06-01	14.8341232227488
2006-07-01	15.0853889943074
2006-08-01	15.0083115649489
2006-09-01	14.9774507476857
2006-10-01	14.8931116389549
2006-11-01	15.2530292230934
2006-12-01	15.3736316039981
2007-01-01	15.4946364719905
2007-02-01	15.2158359170045
2007-03-01	14.8042024832856
2007-04-01	14.1662685140946
2007-05-01	14.1595033428844
2007-06-01	14.2857142857143
2007-07-01	14.6475507765830
2007-08-01	14.6988527724665
2007-09-01	14.4941401578570
2007-10-01	14.4872101362658
2007-11-01	14.7403685092127
2007-12-01	15.0622605363985
2008-01-01	15.3127246585190
2008-02-01	15.1834972415447
2008-03-01	15.2053807350468
2008-04-01	14.5157414083153
2008-05-01	13.9082392505405
2008-06-01	14.4471153846154
2008-07-01	15.0312650312650
2008-08-01	14.2719614921781
2008-09-01	14.4404332129964
2008-10-01	14.5712909441233
2008-11-01	14.6987951807229
2008-12-01	14.9336550060314
2009-01-01	15.3344602752958
2009-02-01	15.4497098646035
2009-03-01	15.2431647713525
2009-04-01	14.7906076010651
2009-05-01	14.4794188861985
2009-06-01	14.8291737339472
2009-07-01	15.0545454545455
2009-08-01	14.8229015041242
2009-09-01	14.9163230657288
2009-10-01	14.9199417758370
2009-11-01	15.3435299830056
2009-12-01	15.6014580801944
2010-01-01	15.4631655725748
2010-02-01	15.6242394743247
2010-03-01	14.9293716512421
2010-04-01	14.7732813261824
2010-05-01	14.7137637028015
2010-06-01	14.7381242387333
2010-07-01	15.0828460038986
2010-08-01	14.9293716512421
2010-09-01	14.9086479902558
2010-10-01	15.0304506699147
2010-11-01	15.2083841091884
2010-12-01	15.3714981729598
2011-01-01	15.4970760233918
2011-02-01	15.5701754385965
2011-03-01	15.0220913107511
2011-04-01	14.3664047151277
2011-05-01	14.2436149312377
2011-06-01	14.3488943488944
2011-07-01	14.9103414394498
2011-08-01	15.1157065484983
2011-09-01	15.6929846003422
2011-10-01	15.4974333903691
2011-11-01	15.4429760156632
2011-12-01	15.4957160342717
2012-01-01	15.7069345748591
2012-02-01	16.0324085440707
2012-03-01	16.0481690833129
2012-04-01	15.4735547355474
2012-05-01	15.5287157998521
2012-06-01	15.0147928994083
2012-07-01	15.4491609081935
2012-08-01	15.6242274412855
2012-09-01	15.4626422563088
2012-10-01	15.3046062407132
2012-11-01	15.6172533465543
2012-12-01	16.1370407149950
2013-01-01	15.6965174129353
2013-02-01	15.9730874657364
2013-03-01	15.8971799351136
2013-04-01	15.2211947013247
2013-05-01	15.0962259435141
2013-06-01	14.8861646234676
2013-07-01	15.2478718077116
2013-08-01	15.0952858575727
2013-09-01	15.1705115346038
2013-10-01	15.3324968632371
2013-11-01	15.2010050251256
2013-12-01	15.6187122736418
2014-01-01	15.6502016129032
2014-02-01	15.5808080808081
2014-03-01	15.1492159838139
2014-04-01	14.7379083312231
2014-05-01	14.5859711319321
2014-06-01	14.7528517110266
2014-07-01	15.1230652118752
2014-08-01	14.9098298196596
2014-09-01	14.6849593495935
2014-10-01	14.9580259475960
2014-11-01	15.3767820773931
2014-12-01	15.3414882772681
2015-01-01	15.2884124553344
2015-02-01	15.2135003835336
2015-03-01	15.1011005886870
2015-04-01	14.9846311475410
2015-05-01	14.9154279856484
2015-06-01	14.9410558687852
2015-07-01	15.1320851500385
2015-08-01	14.8652118100128
2015-09-01	14.3993839835729
2015-10-01	14.5646031338300
2015-11-01	14.9357326478149
2015-12-01	14.7967061245497
2016-01-01	15.0695517774343
2016-02-01	14.8721920991479
2016-03-01	14.8760330578512
2016-04-01	14.3743536711479
2016-05-01	14.1675284384695
2016-06-01	14.3263511766227
2016-07-01	14.5407503234153
2016-08-01	14.1709844559586
2016-09-01	14.0228097459824
2016-10-01	14.0155440414508
2016-11-01	14.5930533955417
2016-12-01	14.3450064850843
2017-01-01	14.6562905317769
2017-02-01	14.9688149688150
2017-03-01	14.9505980239210
2017-04-01	14.5236855804269
2017-05-01	14.0255009107468
2017-06-01	14.1109086175475
2017-07-01	14.1145833333333
2017-08-01	14.2001042209484
2017-09-01	14.0661630632977
2017-10-01	14.0177175612298
2017-11-01	14.4458930899609
2017-12-01	14.3603133159269
2018-01-01	14.3715704206951
2018-02-01	14.4389223123202
2018-03-01	14.1884816753927
2018-04-01	13.7542572701074
2018-05-01	13.3874770762379
2018-06-01	13.3472912850039
2018-07-01	13.6792452830189
2018-08-01	13.6375557303960
2018-09-01	13.6566186107471