Month	Percent
1973-06-01	6.4800
1973-07-01	8.6400
1973-08-01	8.9800
1973-09-01	9.1700
1973-10-01	10.2700
1973-11-01	14.7800
1973-12-01	11.7500
1974-01-01	8.3650
1974-02-01	8.6410
1974-03-01	6.6280
1974-04-01	8.9020
1974-05-01	15.7440
1974-06-01	14.9580
1974-07-01	12.3090
1974-08-01	13.9530
1974-09-01	10.3170
1974-10-01	4.8320
1974-11-01	5.1080
1974-12-01	5.5690
1975-01-01	5.5180
1975-02-01	8.5550
1975-03-01	6.3950
1975-04-01	6.1000
1975-05-01	6.4890
1975-06-01	5.4330
1975-07-01	5.9400
1975-08-01	6.1710
1975-09-01	6.6920
1975-10-01	6.7500
1975-11-01	7.9710
1975-12-01	8.3280
1976-01-01	11.6630
1976-02-01	13.7740
1976-03-01	6.7620
1976-04-01	5.6080
1976-05-01	7.6440
1976-06-01	12.0730
1976-07-01	17.2620
1976-08-01	14.2730
1976-09-01	8.1620
1976-10-01	6.8760
1976-11-01	7.2110
1976-12-01	8.2820
1977-01-01	12.8370
1977-02-01	18.3890
1977-03-01	12.3980
1977-04-01	9.6290
1977-05-01	9.4920
1977-06-01	8.2950
1977-07-01	12.7710
1977-08-01	18.5060
1977-09-01	16.4350
1977-10-01	20.2130
1977-11-01	10.7310
1977-12-01	7.7780
1978-01-01	9.1070
1978-02-01	3.2590
1978-03-01	1.9090
1978-04-01	6.7120
1978-05-01	12.2070
1978-06-01	18.0260
1978-07-01	28.0130
1978-08-01	42.5700
1978-09-01	27.5420
1978-10-01	42.8640
1978-11-01	40.5640
1978-12-01	16.4920
1979-01-01	11.5220
1979-02-01	9.7170
1979-03-01	12.7830
1979-04-01	19.2730
1979-05-01	21.4150
1979-06-01	10.0740
1979-07-01	15.2270
1979-08-01	15.7420
1979-09-01	11.8710
1979-10-01	8.8470
1979-11-01	10.3890
1979-12-01	10.7540
1980-01-01	11.8960
1980-02-01	12.8270
1980-03-01	16.6530
1980-04-01	16.3860
1980-05-01	19.2550
1980-06-01	15.2100
1980-07-01	13.9510
1980-08-01	14.1320
1980-09-01	14.3400
1980-10-01	15.4450
1980-11-01	16.7880
1980-12-01	18.5980
1981-01-01	17.0960
1981-02-01	13.5140
1981-03-01	12.9150
1981-04-01	13.8880
1981-05-01	16.8030
1981-06-01	18.5330
1981-07-01	16.6820
1981-08-01	17.4230
1981-09-01	17.3610
1981-10-01	17.2680
1981-11-01	18.5220
1981-12-01	18.7310
1982-01-01	14.7030
1982-02-01	14.9810
1982-03-01	15.1810
1982-04-01	12.3970
1982-05-01	17.8170
1982-06-01	22.3440
1982-07-01	17.2860
1982-08-01	13.9590
1982-09-01	13.7830
1982-10-01	20.5420
1982-11-01	23.1760
1982-12-01	20.3050
1983-01-01	16.6040
1983-02-01	17.5000
1983-03-01	17.6760
1983-04-01	20.4390
1983-05-01	20.7400
1983-06-01	20.1350
1983-07-01	21.0920
1983-08-01	23.4040
1983-09-01	20.6860
1983-10-01	19.9800
1983-11-01	18.2490
1983-12-01	16.9870
1984-01-01	10.4490
1984-02-01	18.1620
1984-03-01	14.7710
1984-04-01	11.6120
1984-05-01	11.9310
1984-06-01	11.9080
1984-07-01	11.1520
1984-08-01	12.6860
1984-09-01	12.5130
1984-10-01	10.8600
1984-11-01	12.9960
1984-12-01	12.1810
1985-01-01	11.4330
1985-02-01	12.1580
1985-03-01	12.0710
1985-04-01	10.5470
1985-05-01	12.6120
1985-06-01	14.0190
1985-07-01	12.5400
1985-08-01	13.1210
1985-09-01	11.0570
1985-10-01	9.1750
1985-11-01	10.6530
1985-12-01	9.9400
1986-01-01	8.4970
1986-02-01	10.5420
1986-03-01	11.2550
1986-04-01	12.2020
1986-05-01	12.0400
1986-06-01	12.0330
1986-07-01	12.2620
1986-08-01	12.3480
1986-09-01	11.5800
1986-10-01	11.6800
1986-11-01	11.6940
1986-12-01	11.7570
1987-01-01	12.2090
1987-02-01	12.4720
1987-03-01	14.4250
1987-04-01	17.3210
1987-05-01	20.1810
1987-06-01	18.1220
1987-07-01	18.0940
1987-08-01	17.6840
1987-09-01	17.4520
1987-10-01	16.2230
1987-11-01	14.5960
1987-12-01	13.9990
1988-01-01	13.1960
1988-02-01	12.1280
1988-03-01	11.3960
1988-04-01	11.0130
1988-05-01	10.8120
1988-06-01	10.4740
1988-07-01	10.4550
1988-08-01	10.3920
1988-09-01	10.5790
1988-10-01	11.3100
1988-11-01	11.3620
1988-12-01	12.3990
1989-01-01	12.3460
1989-02-01	13.4700
1989-03-01	13.8920
1989-04-01	13.9090
1989-05-01	13.9740
1989-06-01	14.4220
1989-07-01	15.1070
1989-08-01	15.1030
1989-09-01	14.9850
1989-10-01	14.8280
1989-11-01	15.1830
1989-12-01	15.4870
1990-01-01	15.0650
1990-02-01	15.0590
1990-03-01	14.7850
1990-04-01	14.5800
1990-05-01	14.6640
1990-06-01	14.7420
1990-07-01	14.7100
1990-08-01	14.6370
1990-09-01	14.6550
1990-10-01	14.6120
1990-11-01	14.7030
1990-12-01	14.9130
1991-01-01	14.5910
1991-02-01	14.5630
1991-03-01	14.0830
1991-04-01	13.5800
1991-05-01	13.1730
1991-06-01	12.6630
1991-07-01	12.7200
1991-08-01	12.6450
1991-09-01	12.5920
1991-10-01	12.5790
1991-11-01	12.6100
1991-12-01	12.6430
1992-01-01	12.7170
1992-02-01	12.5950
1992-03-01	12.3660
1992-04-01	12.1240
1992-05-01	12.4220
1992-06-01	12.3790
1992-07-01	12.6590
1992-08-01	13.0100
1992-09-01	13.0300
1992-10-01	13.4060
1992-11-01	14.2740
1992-12-01	15.1040
1993-01-01	14.3610
1993-02-01	14.7680
1993-03-01	15.6660
1993-04-01	14.2460
1993-05-01	13.6170
1993-06-01	11.6360
1993-07-01	12.3850
1993-08-01	10.7420
1993-09-01	10.1900
1993-10-01	10.6880
1993-11-01	9.5890
1993-12-01	9.1370
1994-01-01	8.9990
1994-02-01	8.8000
1994-03-01	8.1660
1994-04-01	7.9530
1994-05-01	7.6280
1994-06-01	7.5170
1994-07-01	7.5620
1994-08-01	7.4570
1994-09-01	7.3580
1994-10-01	7.4190
1994-11-01	7.4060
1994-12-01	7.4730
1995-01-01	8.0160
1995-02-01	8.0500
1995-03-01	8.6520
1995-04-01	8.5660
1995-05-01	8.7070
1995-06-01	9.3990
1995-07-01	9.4380
1995-08-01	9.4660
1995-09-01	9.3350
1995-10-01	9.3020
1995-11-01	9.4410
1995-12-01	9.4130
1996-01-01	9.0160
1996-02-01	9.0340
1996-03-01	8.5100
1996-04-01	7.8180
1996-05-01	7.6610
1996-06-01	7.3090
1996-07-01	7.3870
1996-08-01	7.4400
1996-09-01	7.3300
1996-10-01	6.8490
1996-11-01	6.8750
1996-12-01	6.5500
1997-01-01	6.1100
1997-02-01	6.1500
1997-03-01	5.8300
1997-04-01	5.6000
1997-05-01	5.4700
1997-06-01	5.3400
1997-07-01	5.3400
1997-08-01	5.4900
1997-09-01	5.3100
1997-10-01	5.1200
1997-11-01	5.1800
1997-12-01	4.8900
1998-01-01	4.8300
1998-02-01	5.2900
1998-03-01	4.5900
1998-04-01	4.5900
1998-05-01	4.3200
1998-06-01	4.3300
1998-07-01	4.4000
1998-08-01	4.6000
1998-09-01	4.4700
1998-10-01	4.0400
1998-11-01	3.6200
1998-12-01	3.0000
1999-01-01	3.1370
1999-02-01	3.1180
1999-03-01	2.9252
1999-04-01	2.7091
1999-05-01	2.5510
1999-06-01	2.5632
1999-07-01	2.5209
1999-08-01	2.4427
1999-09-01	2.4336
1999-10-01	2.5019
1999-11-01	2.9355
1999-12-01	3.0418
2000-01-01	3.0429
2000-02-01	3.2757
2000-03-01	3.5104
2000-04-01	3.6850
2000-05-01	3.9200
2000-06-01	4.2945
2000-07-01	4.3086
2000-08-01	4.4191
2000-09-01	4.5905
2000-10-01	4.7627
2000-11-01	4.8291
2000-12-01	4.8268
2001-01-01	4.7559
2001-02-01	4.9925
2001-03-01	4.7814
2001-04-01	5.0642
2001-05-01	4.6536
2001-06-01	4.5395
2001-07-01	4.5055
2001-08-01	4.4913
2001-09-01	3.9865
2001-10-01	3.9713
2001-11-01	3.5073
2001-12-01	3.3389
2002-01-01	3.2936
2002-02-01	3.2830
2002-03-01	3.2640
2002-04-01	3.3162
2002-05-01	3.3100
2002-06-01	3.3485
2002-07-01	3.3017
2002-08-01	3.2927
2002-09-01	3.3186
2002-10-01	3.3004
2002-11-01	3.3043
2002-12-01	3.0945
2003-01-01	2.7868
2003-02-01	2.7635
2003-03-01	2.7490
2003-04-01	2.5605
2003-05-01	2.5571
2003-06-01	2.2133
2003-07-01	2.0783
2003-08-01	2.0981
2003-09-01	2.0209
2003-10-01	2.0148
2003-11-01	1.9730
2003-12-01	2.0567
2004-01-01	2.0214
2004-02-01	2.0315
2004-03-01	2.0057
2004-04-01	2.0780
2004-05-01	2.0152
2004-06-01	2.0277
2004-07-01	2.0677
2004-08-01	2.0405
2004-09-01	2.0518
2004-10-01	2.1114
2004-11-01	2.0850
2004-12-01	2.0535
2005-01-01	2.0771
2005-02-01	2.0585
2005-03-01	2.0567
2005-04-01	2.0757
2005-05-01	2.0700
2005-06-01	2.0623
2005-07-01	2.0729
2005-08-01	2.0609
2005-09-01	2.0941
2005-10-01	2.0671
2005-11-01	2.0859
2005-12-01	2.2757
2006-01-01	2.3264
2006-02-01	2.3495
2006-03-01	2.5200
2006-04-01	2.6283
2006-05-01	2.5768
2006-06-01	2.6977
2006-07-01	2.8138
2006-08-01	2.9683
2006-09-01	3.0410
2006-10-01	3.2782
2006-11-01	3.3277
2006-12-01	3.5011
2007-01-01	3.5632
2007-02-01	3.5695
2007-03-01	3.6909
2007-04-01	3.8195
2007-05-01	3.7905
2007-06-01	3.9557
2007-07-01	4.0632
2007-08-01	4.0474
2007-09-01	4.0286
2007-10-01	3.9414
2007-11-01	4.0221
2007-12-01	3.8791
2008-01-01	4.0218
2008-02-01	4.0279
2008-03-01	4.0910
2008-04-01	3.9868
2008-05-01	4.0097
2008-06-01	4.0067
2008-07-01	4.1908
2008-08-01	4.2989
2008-09-01	4.2733
2008-10-01	3.8198
2008-11-01	3.1502
2008-12-01	2.4864
2009-01-01	1.8122
2009-02-01	1.2571
2009-03-01	1.0620
2009-04-01	0.8419
2009-05-01	0.7821
2009-06-01	0.6980
2009-07-01	0.3576
2009-08-01	0.3475
2009-09-01	0.3632
2009-10-01	0.3587
2009-11-01	0.3624
2009-12-01	0.3546
2010-01-01	0.3440
2010-02-01	0.3406
2010-03-01	0.3477
2010-04-01	0.3533
2010-05-01	0.3439
2010-06-01	0.3543
2010-07-01	0.4811
2010-08-01	0.4256
2010-09-01	0.4536
2010-10-01	0.7013
2010-11-01	0.5926
2010-12-01	0.4981
2011-01-01	0.6590
2011-02-01	0.7071
2011-03-01	0.6587
2011-04-01	0.9661
2011-05-01	1.0334
2011-06-01	1.1240
2011-07-01	1.0118
2011-08-01	0.9058
2011-09-01	1.0055
2011-10-01	0.9596
2011-11-01	0.7900
2011-12-01	0.6270
2012-01-01	0.3800
2012-02-01	0.3656
2012-03-01	0.3567
2012-04-01	0.3451
2012-05-01	0.3370
2012-06-01	0.3320
2012-07-01	0.1842
2012-08-01	0.1101
2012-09-01	0.0993
2012-10-01	0.0907
2012-11-01	0.0785
2012-12-01	0.0734
2013-01-01	0.0690
2013-02-01	0.0677
2013-03-01	0.0670
2013-04-01	0.0810
2013-05-01	0.0787
2013-06-01	0.0862
2013-07-01	0.0931
2013-08-01	0.0820
2013-09-01	0.0803
2013-10-01	0.0933
2013-11-01	0.1031
2013-12-01	0.1686
2014-01-01	0.1961
2014-02-01	0.1567
2014-03-01	0.1919
2014-04-01	0.2539
2014-05-01	0.2480
2014-06-01	0.0758
2014-07-01	0.0433
2014-08-01	0.0179
2014-09-01	0.0066
2014-10-01	-0.0045
2014-11-01	-0.0116
2014-12-01	-0.0301
2015-01-01	-0.0506
2015-02-01	-0.0360
2015-03-01	-0.0504
2015-04-01	-0.0745
2015-05-01	-0.1058
2015-06-01	-0.1185
2015-07-01	-0.1177
2015-08-01	-0.1213
2015-09-01	-0.1357
2015-10-01	-0.1389
2015-11-01	-0.1347
2015-12-01	-0.1990
2016-01-01	-0.2387
2016-02-01	-0.2404
2016-03-01	-0.2877
2016-04-01	-0.3378
2016-05-01	-0.3380
2016-06-01	-0.3325
2016-07-01	-0.3288
2016-08-01	-0.3388
2016-09-01	-0.3430
2016-10-01	-0.3466
2016-11-01	-0.3487
2016-12-01	-0.3504
2017-01-01	-0.3515
2017-02-01	-0.3528
2017-03-01	-0.3535
2017-04-01	-0.3569
2017-05-01	-0.3589
2017-06-01	-0.3587
2017-07-01	-0.3595
2017-08-01	-0.3558
2017-09-01	-0.3581
2017-10-01	-0.3590
2017-11-01	-0.3492
2017-12-01	-0.3423
2018-01-01	-0.3624
2018-02-01	-0.3647
2018-03-01	-0.3639
2018-04-01	-0.3657
2018-05-01	-0.3625
2018-06-01	-0.3618
2018-07-01	-0.3636
2018-08-01	-0.3591
2018-09-01	-0.3627
2018-10-01	-0.3660