Month	Percent
1981-01-01	13.62916030534350
1981-02-01	14.11145038167940
1981-03-01	14.68305343511450
1981-04-01	14.96885496183210
1981-05-01	14.57587786259540
1981-06-01	14.27221374045800
1981-07-01	14.75450381679390
1981-08-01	14.96885496183210
1981-09-01	13.82564885496180
1981-10-01	13.43267175572520
1981-11-01	13.68274809160310
1981-12-01	12.45022900763360
1982-01-01	16.39786259541980
1982-02-01	14.50442748091600
1982-03-01	14.62946564885500
1982-04-01	11.95007633587790
1982-05-01	11.03908396946560
1982-06-01	10.37816793893130
1982-07-01	10.52106870229010
1982-08-01	10.36030534351140
1982-09-01	9.77083969465649
1982-10-01	9.19923664122137
1982-11-01	8.41328244274809
1982-12-01	7.14503816793893
1983-01-01	11.25343511450380
1983-02-01	10.96763358778630
1983-03-01	12.53954198473280
1983-04-01	12.80748091603050
1983-05-01	12.55740458015270
1983-06-01	12.32519083969470
1983-07-01	12.18229007633590
1983-08-01	12.50381679389310
1983-09-01	12.71816793893130
1983-10-01	12.05725190839690
1983-11-01	11.62854961832060
1983-12-01	10.05664122137400
1984-01-01	13.30763358778630
1984-02-01	13.96854961832060
1984-03-01	13.95068702290080
1984-04-01	13.77206106870230
1984-05-01	14.79022900763360
1984-06-01	13.52198473282440
1984-07-01	13.02183206106870
1984-08-01	13.07541984732820
1984-09-01	12.09297709923660
1984-10-01	11.57496183206110
1984-11-01	10.89618320610690
1984-12-01	8.57404580152672
1985-01-01	11.27129770992370
1985-02-01	10.93190839694660
1985-03-01	11.57496183206110
1985-04-01	10.86045801526720
1985-05-01	10.53893129770990
1985-06-01	10.05664122137400
1985-07-01	9.64580152671756
1985-08-01	8.93129770992366
1985-09-01	8.57404580152672
1985-10-01	7.68091603053435
1985-11-01	6.96641221374046
1985-12-01	5.62671755725191
1986-01-01	7.46656488549618
1986-02-01	7.85954198473282
1986-03-01	7.84167938931298
1986-04-01	7.52015267175572
1986-05-01	7.28793893129771
1986-06-01	6.71633587786259
1986-07-01	6.43053435114504
1986-08-01	6.25190839694656
1986-09-01	5.76961832061069
1986-10-01	5.32305343511450
1986-11-01	4.71572519083969
1986-12-01	3.85832061068702
1987-01-01	5.69816793893130
1987-02-01	6.03755725190840
1987-03-01	5.85893129770992
1987-04-01	6.05541984732824
1987-05-01	7.09145038167939
1987-06-01	7.91312977099236
1987-07-01	7.98458015267176
1987-08-01	7.53801526717557
1987-09-01	7.19862595419847
1987-10-01	7.07358778625954
1987-11-01	6.48412213740458
1987-12-01	5.10870229007634
1988-01-01	6.78778625954198
1988-02-01	7.73450381679389
1988-03-01	7.68091603053435
1988-04-01	7.28793893129771
1988-05-01	7.21648854961832
1988-06-01	6.96641221374046
1988-07-01	6.85923664122137
1988-08-01	7.43083969465649
1988-09-01	6.85923664122137
1988-10-01	6.51984732824427
1988-11-01	5.93038167938931
1988-12-01	5.21587786259542
1989-01-01	6.91282442748092
1989-02-01	7.12717557251908
1989-03-01	7.46656488549618
1989-04-01	7.03786259541985
1989-05-01	6.01969465648855
1989-06-01	6.01969465648855
1989-07-01	5.66244274809160
1989-08-01	5.75175572519084
1989-09-01	5.75175572519084
1989-10-01	5.46595419847328
1989-11-01	4.44778625954198
1989-12-01	4.21557251908397
1990-01-01	5.89465648854962
1990-02-01	6.12687022900763
1990-03-01	7.21648854961832
1990-04-01	8.53832061068702
1990-05-01	9.41358778625954
1990-06-01	8.75267175572519
1990-07-01	8.09175572519084
1990-08-01	8.03816793893130
1990-09-01	7.59160305343511
1990-10-01	7.52015267175572
1990-11-01	7.59160305343511
1990-12-01	7.02000000000000
1991-01-01	9.34749618320611
1991-02-01	9.66545038167939
1991-03-01	10.53535877862600
1991-04-01	10.29957251908400
1991-05-01	10.19596946564890
1991-06-01	8.69193893129771
1991-07-01	6.82708396946565
1991-08-01	7.21291603053435
1991-09-01	7.77558778625954
1991-10-01	7.62196946564886
1991-11-01	7.95421374045802
1991-12-01	7.41654961832061
1992-01-01	8.68122137404580
1992-02-01	11.36775572519080
1992-03-01	11.09981679389310
1992-04-01	10.47819847328240
1992-05-01	11.66427480916030
1992-06-01	9.22603053435114
1992-07-01	9.25461068702290
1992-08-01	10.54250381679390
1992-09-01	10.26741984732820
1992-10-01	10.31922137404580
1992-11-01	10.40496183206110
1992-12-01	8.05245801526718
1993-01-01	10.71041221374050
1993-02-01	10.32100763358780
1993-03-01	10.51570992366410
1993-04-01	10.93369465648860
1993-05-01	9.63865648854962
1993-06-01	8.84377099236641
1993-07-01	9.34570992366412
1993-08-01	9.53505343511450
1993-09-01	9.02954198473282
1993-10-01	8.74374045801526
1993-11-01	8.47580152671756
1993-12-01	7.85239694656488
1994-01-01	9.89945038167939
1994-02-01	9.60114503816794
1994-03-01	10.55143511450380
1994-04-01	9.60293129770992
1994-05-01	9.25818320610687
1994-06-01	9.69224427480916
1994-07-01	9.75654961832061
1994-08-01	9.81728244274809
1994-09-01	9.02061068702290
1994-10-01	8.09175572519084
1994-11-01	7.15575572519084
1994-12-01	6.10900763358779
1995-01-01	7.90062595419847
1995-02-01	7.59517557251908
1995-03-01	7.89883969465649
1995-04-01	7.77380152671756
1995-05-01	8.03638167938931
1995-06-01	8.20250381679389
1995-07-01	8.63835114503817
1995-08-01	8.75445801526717
1995-09-01	9.28319083969466
1995-10-01	9.10099236641221
1995-11-01	8.44722137404580
1995-12-01	7.94170992366412
1996-01-01	9.40287022900763
1996-02-01	10.19596946564890
1996-03-01	11.41062595419850
1996-04-01	10.77293129770990
1996-05-01	10.57108396946560
1996-06-01	10.58894656488550
1996-07-01	9.97447328244275
1996-08-01	9.93696183206107
1996-09-01	9.35285496183206
1996-10-01	9.19387786259542
1996-11-01	8.14534351145038
1996-12-01	6.83601526717557
1997-01-01	9.18673282442748
1997-02-01	9.92088549618321
1997-03-01	10.67290076335880
1997-04-01	10.27099236641220
1997-05-01	10.72112977099240
1997-06-01	10.87832061068700
1997-07-01	10.66754198473280
1997-08-01	10.63360305343510
1997-09-01	10.06200000000000
1997-10-01	10.21204580152670
1997-11-01	9.57077862595420
1997-12-01	8.64906870229008
1998-01-01	12.95931297709920
1998-02-01	13.26297709923660
1998-03-01	14.62232061068700
1998-04-01	14.18825954198470
1998-05-01	14.66340458015270
1998-06-01	14.12038167938930
1998-07-01	14.33116030534350
1998-08-01	13.93461068702290
1998-09-01	13.67381679389310
1998-10-01	13.31299236641220
1998-11-01	12.59134351145040
1998-12-01	11.29809160305340
1999-01-01	13.80778625954200
1999-02-01	13.41480916030530
1999-03-01	14.57587786259540
1999-04-01	14.32580152671760
1999-05-01	13.75419847328240
1999-06-01	14.00427480916030
1999-07-01	13.46839694656490
1999-08-01	13.71847328244270
1999-09-01	13.16473282442750
1999-10-01	13.45053435114500
1999-11-01	13.07541984732820
1999-12-01	11.21770992366410
2000-01-01	13.62916030534350
2000-02-01	14.57587786259540
2000-03-01	14.37938931297710
2000-04-01	14.00427480916030
2000-05-01	13.91496183206110
2000-06-01	13.23618320610690
2000-07-01	12.80748091603050
2000-08-01	12.75389312977100
2000-09-01	11.93221374045800
2000-10-01	12.05725190839690
2000-11-01	11.05694656488550
2000-12-01	8.62763358778626
2001-01-01	10.18167938931300
2001-02-01	10.21740458015270
2001-03-01	11.53923664122140
2001-04-01	11.62854961832060
2001-05-01	12.25374045801530
2001-06-01	11.39633587786260
2001-07-01	11.05694656488550
2001-08-01	11.03908396946560
2001-09-01	10.98549618320610
2001-10-01	11.70000000000000
2001-11-01	11.50000000000000
2001-12-01	10.60000000000000
2002-01-01	11.10000000000000
2002-02-01	12.50000000000000
2002-03-01	13.00097343570920
2002-04-01	12.58970879242180
2002-05-01	11.94666147319740
2002-06-01	11.63334006318500
2002-07-01	11.93092778500340
2002-08-01	11.78261937402420
2002-09-01	11.54238095781320
2002-10-01	11.21982087801460
2002-11-01	10.95286498974390
2002-12-01	10.54694791306580
2003-01-01	11.23835416594360
2003-02-01	11.65546834638960
2003-03-01	12.19257078949310
2003-04-01	12.52068892840440
2003-05-01	12.94996154042400
2003-06-01	13.08400158180930
2003-07-01	12.86330838351060
2003-08-01	13.13755968880400
2003-09-01	13.06572499110920
2003-10-01	13.02699251951290
2003-11-01	12.26171412091070
2003-12-01	10.96005254637410
2004-01-01	11.77847847795500
2004-02-01	12.10518306083950
2004-03-01	12.88568410849020
2004-04-01	13.16080129314410
2004-05-01	12.29874135533610
2004-06-01	11.80091085674300
2004-07-01	11.27238845940790
2004-08-01	11.43965388203710
2004-09-01	10.96125283675350
2004-10-01	10.54139765809540
2004-11-01	10.70393863645660
2004-12-01	9.65719972866313
2005-01-01	10.21940094827070
2005-02-01	10.70227229225040
2005-03-01	10.88725009221070
2005-04-01	10.83695589478770
2005-05-01	10.22421281458520
2005-06-01	9.42227871269699
2005-07-01	9.48679428777595
2005-08-01	9.47154340287099
2005-09-01	9.70768548859880
2005-10-01	9.66534108587074
2005-11-01	9.64436444128138
2005-12-01	8.40870552699289
2006-01-01	9.31425479974054
2006-02-01	10.12184505466360
2006-03-01	10.46158380526660
2006-04-01	10.43410516303210
2006-05-01	10.23387452384960
2006-06-01	10.47156340010980
2006-07-01	10.79068260604270
2006-08-01	10.64272271646560
2006-09-01	10.03149029639940
2006-10-01	9.85494747910732
2006-11-01	9.58845436138257
2006-12-01	8.41007958928924
2007-01-01	9.32160696608288
2007-02-01	9.90278364860284
2007-03-01	10.19724689259270
2007-04-01	10.19857792769060
2007-05-01	10.19707112865630
2007-06-01	9.72542364227347
2007-07-01	9.51632045112978
2007-08-01	9.59134821210548
2007-09-01	9.04089015367363
2007-10-01	8.73896897564959
2007-11-01	8.28195593433106
2007-12-01	7.47309264043221
2008-01-01	8.02516763552768
2008-02-01	8.73422768358060
2008-03-01	8.61819781283015
2008-04-01	8.56528629271881
2008-05-01	7.94386491749106
2008-06-01	7.88681958366771
2008-07-01	8.14898556916281
2008-08-01	7.63345093689794
2008-09-01	7.68417873547333
2008-10-01	7.49800739232714
2008-11-01	7.59986674762664
2008-12-01	6.80522533493568
2009-01-01	8.22471766541552
2009-02-01	8.49975328353583
2009-03-01	9.06277855724056
2009-04-01	8.93575518755084
2009-05-01	8.86303775623662
2009-06-01	8.13053205246114
2009-07-01	8.00903506109252
2009-08-01	8.11479989926744
2009-09-01	7.72989358936624
2009-10-01	7.55398006487590
2009-11-01	7.36652639711180
2009-12-01	6.81533657446390
2010-01-01	7.25454752124380
2010-02-01	7.37590278033638
2010-03-01	7.61489531929187
2010-04-01	7.28244255431951
2010-05-01	7.47940081147233
2010-06-01	7.01711523725919
2010-07-01	6.96358926348578
2010-08-01	6.75845256331528
2010-09-01	6.23829370443782
2010-10-01	6.08090540418491
2010-11-01	5.73173586029460
2010-12-01	5.28862204766176
2011-01-01	6.06507039607200
2011-02-01	6.37669465289561
2011-03-01	6.47124027379004
2011-04-01	6.45806809139360
2011-05-01	6.36678191136720
2011-06-01	6.19817567106135
2011-07-01	6.04960589616025
2011-08-01	5.99863117141631
2011-09-01	6.02944481999469
2011-10-01	5.76340716812292
2011-11-01	5.20768577965678
2011-12-01	4.75560087236015
2012-01-01	5.52050024132229
2012-02-01	5.75675629735990
2012-03-01	6.22301953560666
2012-04-01	6.05796995401238
2012-05-01	5.80874347618934
2012-06-01	5.86634932212369
2012-07-01	5.40030315706309
2012-08-01	5.31906529763085
2012-09-01	5.42116942124729
2012-10-01	5.33346945643246
2012-11-01	4.90612648181219
2012-12-01	4.62974145821452
2013-01-01	5.44508468148519
2013-02-01	5.58273727546232
2013-03-01	5.65942282889820
2013-04-01	5.82129942902408
2013-05-01	5.81045040837691
2013-06-01	5.96483117581350
2013-07-01	5.63219488741976
2013-08-01	5.29206378924950
2013-09-01	5.42559782552754
2013-10-01	5.18079052443618
2013-11-01	4.63770801644862
2013-12-01	4.35375302733000
2014-01-01	4.79773743821107
2014-02-01	5.14130009643199
2014-03-01	5.03434347925577
2014-04-01	4.87118134125844
2014-05-01	4.89448400660266
2014-06-01	4.81155136835487
2014-07-01	4.90398961666559
2014-08-01	5.01924643556474
2014-09-01	4.87739525103797
2014-10-01	4.68098541676198
2014-11-01	4.85366816004391
2014-12-01	4.33228926250648
2015-01-01	5.30630464656028
2015-02-01	5.87162607760123
2015-03-01	6.17515718242189
2015-04-01	6.40723682223608
2015-05-01	6.69333013326909
2015-06-01	6.90466740963823
2015-07-01	7.50305654931552
2015-08-01	7.56044328495894
2015-09-01	7.55647808264302
2015-10-01	7.85374775173570
2015-11-01	7.53033021487462