Month	Percent
1960-01-01	3.5000
1960-02-01	3.5000
1960-03-01	3.5000
1960-04-01	3.5000
1960-05-01	3.5000
1960-06-01	3.5000
1960-07-01	3.5000
1960-08-01	4.5000
1960-09-01	4.5000
1960-10-01	4.5000
1960-11-01	4.5000
1960-12-01	4.5000
1961-01-01	4.5000
1961-02-01	4.5000
1961-03-01	4.5000
1961-04-01	4.5000
1961-05-01	4.5000
1961-06-01	4.5000
1961-07-01	4.5000
1961-08-01	4.2500
1961-09-01	4.2500
1961-10-01	4.2500
1961-11-01	4.2500
1961-12-01	4.0000
1962-01-01	3.6000
1962-02-01	3.4000
1962-03-01	3.3000
1962-04-01	3.0000
1962-05-01	3.0000
1962-06-01	3.0000
1962-07-01	3.0000
1962-08-01	2.9000
1962-09-01	2.9000
1962-10-01	3.0000
1962-11-01	3.0000
1962-12-01	3.0000
1963-01-01	3.0000
1963-02-01	3.0000
1963-03-01	3.0000
1963-04-01	3.0000
1963-05-01	3.0000
1963-06-01	3.0000
1963-07-01	3.4000
1963-08-01	3.4000
1963-09-01	3.4500
1963-10-01	3.7500
1963-11-01	3.9000
1963-12-01	4.1000
1964-01-01	4.2000
1964-02-01	4.2500
1964-03-01	4.2500
1964-04-01	4.3000
1964-05-01	4.3000
1964-06-01	4.3000
1964-07-01	4.5000
1964-08-01	4.5000
1964-09-01	4.5000
1964-10-01	4.5000
1964-11-01	4.7500
1964-12-01	4.7500
1965-01-01	4.7000
1965-02-01	4.6500
1965-03-01	4.5000
1965-04-01	4.5000
1965-05-01	4.5000
1965-06-01	4.6000
1965-07-01	4.8000
1965-08-01	4.6000
1965-09-01	4.6000
1965-10-01	4.6000
1965-11-01	4.6000
1965-12-01	4.7500
1966-01-01	4.7500
1966-02-01	4.7500
1966-03-01	4.7500
1966-04-01	4.9000
1966-05-01	5.1000
1966-06-01	5.3000
1966-07-01	5.3000
1966-08-01	5.4000
1966-09-01	5.5000
1966-10-01	5.7000
1966-11-01	5.7500
1966-12-01	5.8500
1967-01-01	5.7500
1967-02-01	5.7000
1967-03-01	5.5000
1967-04-01	5.3000
1967-05-01	5.2000
1967-06-01	5.4500
1967-07-01	5.5000
1967-08-01	5.2500
1967-09-01	5.0000
1967-10-01	4.5000
1967-11-01	4.4500
1967-12-01	4.4000
1968-01-01	4.3500
1968-02-01	4.1000
1968-03-01	3.9500
1968-04-01	3.7500
1968-05-01	3.7500
1968-06-01	3.7500
1968-07-01	3.7500
1968-08-01	3.7500
1968-09-01	3.8000
1968-10-01	4.1000
1968-11-01	4.5000
1968-12-01	5.0000
1969-01-01	5.4000
1969-02-01	5.7000
1969-03-01	6.0000
1969-04-01	6.1000
1969-05-01	6.2500
1969-06-01	6.5500
1969-07-01	7.5000
1969-08-01	7.7500
1969-09-01	8.5000
1969-10-01	8.5000
1969-11-01	8.5000
1969-12-01	8.5000
1970-01-01	8.5000
1970-02-01	8.2500
1970-03-01	8.1000
1970-04-01	8.0500
1970-05-01	8.0000
1970-06-01	8.0000
1970-07-01	8.0000
1970-08-01	7.8000
1970-09-01	7.6500
1970-10-01	7.3000
1970-11-01	7.1000
1970-12-01	6.9500
1971-01-01	6.8000
1971-02-01	5.8000
1971-03-01	4.8500
1971-04-01	4.8000
1971-05-01	4.8000
1971-06-01	4.8000
1971-07-01	4.9000
1971-08-01	4.7000
1971-09-01	4.6000
1971-10-01	4.6000
1971-11-01	4.6000
1971-12-01	4.8000
1972-01-01	4.8000
1972-02-01	4.0000
1972-03-01	3.4500
1972-04-01	3.5000
1972-05-01	3.5000
1972-06-01	3.5000
1972-07-01	3.5000
1972-08-01	3.6500
1972-09-01	3.6500
1972-10-01	3.8500
1972-11-01	4.0500
1972-12-01	4.5000
1973-01-01	5.2000
1973-02-01	5.2000
1973-03-01	5.2000
1973-04-01	5.2000
1973-05-01	5.2500
1973-06-01	5.7000
1973-07-01	6.5500
1973-08-01	6.8500
1973-09-01	7.3500
1973-10-01	7.6500
1973-11-01	7.6500
1973-12-01	7.6500
1974-01-01	7.6500
1974-02-01	8.5000
1974-03-01	9.0000
1974-04-01	9.4000
1974-05-01	10.0000
1974-06-01	11.2500
1974-07-01	11.7500
1974-08-01	11.7500
1974-09-01	11.7500
1974-10-01	11.2500
1974-11-01	10.7500
1974-12-01	10.5000
1975-01-01	9.5000
1975-02-01	8.5000
1975-03-01	7.3000
1975-04-01	7.1500
1975-05-01	6.6000
1975-06-01	6.0000
1975-07-01	6.2500
1975-08-01	6.0500
1975-09-01	6.0500
1975-10-01	6.0500
1975-11-01	6.0500
1975-12-01	6.0500
1976-01-01	6.0500
1976-02-01	6.4000
1976-03-01	9.0000
1976-04-01	9.2500
1976-05-01	9.5000
1976-06-01	9.0000
1976-07-01	10.0000
1976-08-01	11.5000
1976-09-01	13.0000
1976-10-01	13.5000
1976-11-01	11.5000
1976-12-01	10.0000
1977-01-01	8.2500
1977-02-01	7.5000
1977-03-01	7.2500
1977-04-01	7.2500
1977-05-01	7.0000
1977-06-01	6.7500
1977-07-01	6.6500
1977-08-01	6.2500
1977-09-01	6.2500
1977-10-01	6.2500
1977-11-01	6.0000
1977-12-01	9.2500
1978-01-01	7.7500
1978-02-01	6.7500
1978-03-01	5.7500
1978-04-01	5.6000
1978-05-01	5.6000
1978-06-01	5.7500
1978-07-01	6.3500
1978-08-01	7.0000
1978-09-01	7.5000
1978-10-01	9.5000
1978-11-01	8.7500
1978-12-01	9.2500
1979-01-01	8.7500
1979-02-01	8.1500
1979-03-01	7.9000
1979-04-01	7.9000
1979-05-01	8.5000
1979-06-01	11.2500
1979-07-01	12.0000
1979-08-01	12.0000
1979-09-01	13.0000
1979-10-01	14.0000
1979-11-01	14.3000
1979-12-01	14.4000
1980-01-01	14.4000
1980-02-01	15.0000
1980-03-01	17.5000
1980-04-01	17.0000
1980-05-01	15.5000
1980-06-01	13.7500
1980-07-01	13.0000
1980-08-01	12.3500
1980-09-01	12.2500
1980-10-01	12.1000
1980-11-01	12.7500
1980-12-01	12.7500
1981-01-01	12.1000
1981-02-01	13.2500
1981-03-01	15.0000
1981-04-01	17.0000
1981-05-01	16.7500
1981-06-01	14.7500
1981-07-01	16.2500
1981-08-01	15.7500
1981-09-01	15.7500
1981-10-01	15.6500
1981-11-01	15.0000
1981-12-01	16.0000
1982-01-01	15.1500
1982-02-01	14.2500
1982-03-01	14.2500
1982-04-01	15.0000
1982-05-01	15.0000
1982-06-01	15.7500
1982-07-01	14.5000
1982-08-01	13.7500
1982-09-01	12.7500
1982-10-01	12.7500
1982-11-01	12.2500
1982-12-01	12.2500
1983-01-01	12.2500
1983-02-01	12.2500
1983-03-01	12.0000
1983-04-01	10.4500
1983-05-01	10.0000
1983-06-01	9.2500
1983-07-01	9.2500
1983-08-01	9.2500
1983-09-01	9.2500
1983-10-01	9.5000
1983-11-01	10.5000
1983-12-01	10.8500
1984-01-01	10.8500
1984-02-01	12.0000
1984-03-01	12.2500
1984-04-01	11.7500
1984-05-01	11.7500
1984-06-01	11.7500
1984-07-01	11.7500
1984-08-01	11.4500
1984-09-01	11.0000
1984-10-01	11.0000
1984-11-01	10.7500
1984-12-01	10.7500
1985-01-01	10.7000
1985-02-01	10.7000
1985-03-01	10.4500
1985-04-01	9.7500
1985-05-01	9.0000
1985-06-01	8.9000
1985-07-01	8.9000
1985-08-01	9.5000
1985-09-01	9.1500
1985-10-01	8.8000
1985-11-01	8.6000
1985-12-01	9.7500
1986-01-01	9.7500
1986-02-01	9.7500
1986-03-01	9.7500
1986-04-01	8.2500
1986-05-01	8.0000
1986-06-01	7.3500
1986-07-01	7.3500
1986-08-01	7.3500
1986-09-01	7.3500
1986-10-01	7.3500
1986-11-01	7.3500
1986-12-01	7.4000
1987-01-01	7.7500
1987-02-01	7.7500
1987-03-01	7.4000
1987-04-01	7.2500
1987-05-01	7.0500
1987-06-01	6.7500
1987-07-01	6.6500
1987-08-01	6.6500
1987-09-01	6.6500
1987-10-01	7.1500
1987-11-01	6.8500
1987-12-01	6.7500
1988-01-01	6.3500
1988-02-01	6.1500
1988-03-01	6.1000
1988-04-01	6.1000
1988-05-01	6.1000
1988-06-01	6.1000
1988-07-01	7.1000
1988-08-01	7.5000
1988-09-01	7.3500
1988-10-01	7.2500
1988-11-01	7.1500
1988-12-01	7.5000
1989-01-01	7.7000
1989-02-01	8.4000
1989-03-01	8.2000
1989-04-01	8.3000
1989-05-01	8.6500
1989-06-01	8.5000
1989-07-01	8.5000
1989-08-01	8.4500
1989-09-01	9.2000
1989-10-01	9.6500
1989-11-01	9.8000
1989-12-01	10.2500
1990-01-01	10.4000
1990-02-01	10.4000
1990-03-01	10.3000
1990-04-01	10.0500
1990-05-01	9.8500
1990-06-01	9.4000
1990-07-01	9.2000
1990-08-01	9.1500
1990-09-01	8.9500
1990-10-01	8.8500
1990-11-01	9.0000
1990-12-01	10.0500
1991-01-01	9.8600
1991-02-01	9.6500
1991-03-01	9.3700
1991-04-01	9.3000
1991-05-01	9.0900
1991-06-01	9.1500
1991-07-01	9.2000
1991-08-01	9.3300
1991-09-01	9.2000
1991-10-01	9.2900
1991-11-01	9.4700
1991-12-01	9.6800
1992-01-01	9.4800
1992-02-01	9.5800
1992-03-01	9.6300
1992-04-01	9.5600
1992-05-01	9.5700
1992-06-01	9.5800
1992-07-01	9.6200
1992-08-01	9.7500
1992-09-01	9.5500
1992-10-01	8.7000
1992-11-01	8.7200
1992-12-01	8.7100
1993-01-01	8.2400
1993-02-01	8.7500
1993-03-01	8.4000
1993-04-01	8.0500
1993-05-01	7.2700
1993-06-01	6.9500
1993-07-01	7.2400
1993-08-01	9.5300
1993-09-01	9.8700
1993-10-01	9.1300
1993-11-01	8.1700
1993-12-01	7.0900
1994-01-01	6.9600
1994-02-01	6.4500
1994-03-01	6.1500
1994-04-01	5.9300
1994-05-01	5.3400
1994-06-01	5.4200
1994-07-01	5.4600
1994-08-01	5.5000
1994-09-01	5.4000
1994-10-01	5.2200
1994-11-01	5.1400
1994-12-01	5.3700
1995-01-01	5.3600
1995-02-01	5.4200
1995-03-01	6.3400
1995-04-01	5.3200
1995-05-01	5.1800
1995-06-01	4.6500
1995-07-01	4.5600
1995-08-01	4.4600
1995-09-01	4.2300
1995-10-01	4.2000
1995-11-01	3.9000
1995-12-01	3.7800
1996-01-01	3.5100
1996-02-01	3.2700
1996-03-01	3.2700
1996-04-01	3.2400
1996-05-01	3.2200
1996-06-01	3.2700
1996-07-01	3.3400
1996-08-01	3.2600
1996-09-01	3.0900
1996-10-01	3.0400
1996-11-01	3.0600
1996-12-01	3.0300
1997-01-01	3.0300
1997-02-01	3.1300
1997-03-01	3.4500
1997-04-01	3.2600
1997-05-01	3.2400
1997-06-01	3.2700
1997-07-01	3.4300
1997-08-01	3.6100
1997-09-01	3.5900
1997-10-01	3.8200
1997-11-01	3.7700
1997-12-01	3.6400
1998-01-01	3.4800
1998-02-01	3.5500
1998-03-01	3.6400
1998-04-01	3.7400
1998-05-01	3.7000
1998-06-01	3.6500
1998-07-01	3.6200
1998-08-01	3.5300
1998-09-01	3.4600
1998-10-01	3.4700
1998-11-01	3.5600
1998-12-01	3.3000
1999-01-01	3.1321
1999-02-01	3.0934
1999-03-01	3.0467
1999-04-01	2.6965
1999-05-01	2.5790
1999-06-01	2.6267
1999-07-01	2.6765
1999-08-01	2.6950
1999-09-01	2.7267
1999-10-01	3.3757
1999-11-01	3.4677
1999-12-01	3.4460
2000-01-01	3.3431
2000-02-01	3.5368
2000-03-01	3.7470
2000-04-01	3.9253
2000-05-01	4.3620
2000-06-01	4.5017
2000-07-01	4.5829
2000-08-01	4.7771
2000-09-01	4.8528
2000-10-01	5.0413
2000-11-01	5.0920
2000-12-01	4.9392
2001-01-01	4.7707
2001-02-01	4.7558
2001-03-01	4.7086
2001-04-01	4.6820
2001-05-01	4.6367
2001-06-01	4.4536
2001-07-01	4.4671
2001-08-01	4.3535
2001-09-01	3.9829
2001-10-01	3.5999
2001-11-01	3.3857
2001-12-01	3.3449
2002-01-01	3.3388
2002-02-01	3.3571
2002-03-01	3.3908
2002-04-01	3.4069
2002-05-01	3.4671
2002-06-01	3.4640
2002-07-01	3.4100
2002-08-01	3.3519
2002-09-01	3.3101
2002-10-01	3.2613
2002-11-01	3.1241
2002-12-01	2.9410
2003-01-01	2.8318
2003-02-01	2.6875
2003-03-01	2.5300
2003-04-01	2.5333
2003-05-01	2.4005
2003-06-01	2.1519
2003-07-01	2.1300
2003-08-01	2.1404
2003-09-01	2.1473
2003-10-01	2.1436
2003-11-01	2.1590
2003-12-01	2.1463
2004-01-01	2.0895
2004-02-01	2.0705
2004-03-01	2.0288
2004-04-01	2.0488
2004-05-01	2.0859
2004-06-01	2.1127
2004-07-01	2.1160
2004-08-01	2.1143
2004-09-01	2.1186
2004-10-01	2.1473
2004-11-01	2.1703
2004-12-01	2.1732
2005-01-01	2.1454
2005-02-01	2.1383
2005-03-01	2.1372
2005-04-01	2.1372
2005-05-01	2.1256
2005-06-01	2.1110
2005-07-01	2.1194
2005-08-01	2.1325
2005-09-01	2.1391
2005-10-01	2.1966
2005-11-01	2.3609
2005-12-01	2.4729
2006-01-01	2.5117
2006-02-01	2.6004
2006-03-01	2.7226
2006-04-01	2.7938
2006-05-01	2.8890
2006-06-01	2.9857
2006-07-01	3.1022
2006-08-01	3.2265
2006-09-01	3.3354
2006-10-01	3.5020
2006-11-01	3.5972
2006-12-01	3.6842
2007-01-01	3.7519
2007-02-01	3.8182
2007-03-01	3.8909
2007-04-01	3.9753
2007-05-01	4.0714
2007-06-01	4.1478
2007-07-01	4.2162
2007-08-01	4.5436
2007-09-01	4.7417
2007-10-01	4.6874
2007-11-01	4.6385
2007-12-01	4.8484
2008-01-01	4.4815
2008-02-01	4.3621
2008-03-01	4.5964
2008-04-01	4.7835
2008-05-01	4.8574
2008-06-01	4.9405
2008-07-01	4.9610
2008-08-01	4.9652
2008-09-01	5.0192
2008-10-01	5.1131
2008-11-01	4.2383
2008-12-01	3.2926
2009-01-01	2.4565
2009-02-01	1.9431
2009-03-01	1.6355
2009-04-01	1.4223
2009-05-01	1.2817
2009-06-01	1.2279
2009-07-01	0.9750
2009-08-01	0.8605
2009-09-01	0.7721
2009-10-01	0.7375
2009-11-01	0.7162
2009-12-01	0.7120
2010-01-01	0.6797
2010-02-01	0.6617
2010-03-01	0.6450
2010-04-01	0.6447
2010-05-01	0.6865
2010-06-01	0.7276
2010-07-01	0.8488
2010-08-01	0.8955
2010-09-01	0.8805
2010-10-01	0.9977
2010-11-01	1.0420
2010-12-01	1.0217
2011-01-01	1.0172
2011-02-01	1.0867
2011-03-01	1.1755
2011-04-01	1.3212
2011-05-01	1.4251
2011-06-01	1.4886
2011-07-01	1.5976
2011-08-01	1.5521
2011-09-01	1.5365
2011-10-01	1.5759
2011-11-01	1.4847
2011-12-01	1.4261
2012-01-01	1.2222
2012-02-01	1.0483
2012-03-01	0.8585
2012-04-01	0.7443
2012-05-01	0.6849
2012-06-01	0.6589
2012-07-01	0.4970
2012-08-01	0.3324
2012-09-01	0.2463
2012-10-01	0.2079
2012-11-01	0.1920
2012-12-01	0.1855
2013-01-01	0.2049
2013-02-01	0.2234
2013-03-01	0.2061
2013-04-01	0.2089
2013-05-01	0.2012
2013-06-01	0.2103
2013-07-01	0.2214
2013-08-01	0.2259
2013-09-01	0.2232
2013-10-01	0.2258
2013-11-01	0.2234
2013-12-01	0.2735
2014-01-01	0.2920
2014-02-01	0.2881
2014-03-01	0.3053
2014-04-01	0.3297
2014-05-01	0.3246
2014-06-01	0.2414
2014-07-01	0.2050
2014-08-01	0.1916
2014-09-01	0.0971
2014-10-01	0.0826
2014-11-01	0.0809
2014-12-01	0.0809
2015-01-01	0.0627
2015-02-01	0.0482
2015-03-01	0.0272
2015-04-01	0.0047
2015-05-01	-0.0104
2015-06-01	-0.0139
2015-07-01	-0.0187
2015-08-01	-0.0277
2015-09-01	-0.0370
2015-10-01	-0.0536
2015-11-01	-0.0876
2015-12-01	-0.1263
2016-01-01	-0.1461
2016-02-01	-0.1836
2016-03-01	-0.2285
2016-04-01	-0.2492
2016-05-01	-0.2572
2016-06-01	-0.2679
2016-07-01	-0.2945
2016-08-01	-0.2982
2016-09-01	-0.3016
2016-10-01	-0.3090
2016-11-01	-0.3127
2016-12-01	-0.3158
2017-01-01	-0.3255
2017-02-01	-0.3286
2017-03-01	-0.3293
2017-04-01	-0.3304
2017-05-01	-0.3295
2017-06-01	-0.3300
2017-07-01	-0.3304
2017-08-01	-0.3291
2017-09-01	-0.3294
2017-10-01	-0.3295
2017-11-01	-0.3290
2017-12-01	-0.3279
2018-01-01	-0.3285
2018-02-01	-0.3285
2018-03-01	-0.3279
2018-04-01	-0.3285
2018-05-01	-0.3252
2018-06-01	-0.3220
2018-07-01	-0.3207
2018-08-01	-0.3190
2018-09-01	-0.3188
2018-10-01	-0.3177