Monthly Percent
1997-01-01 34.900
1997-02-01 33.100
1997-03-01 30.600
1997-04-01 28.900
1997-05-01 30.400
1997-06-01 22.800
1997-07-01 30.500
1997-08-01 22.400
1997-09-01 15.800
1997-10-01 19.700
1997-11-01 19.700
1997-12-01 15.700
1998-01-01 25.400
1998-02-01 28.600
1998-03-01 25.800
1998-04-01 26.100
1998-05-01 45.300
1998-06-01 31.500
1998-07-01 39.400
1998-08-01 35.500
1998-09-01 12.100
1998-10-01 33.000
1998-11-01 35.800
1998-12-01 20.000
1999-01-01 43.900
1999-02-01 23.300
1999-03-01 21.600
1999-04-01 20.600
1999-05-01 21.000
1999-06-01 20.400
1999-07-01 16.900
1999-08-01 19.500
1999-09-01 17.700
1999-10-01 19.900
1999-11-01 22.200
1999-12-01 28.600
2000-01-01 27.400
2000-02-01 17.800
2000-03-01 14.700
2000-04-01 13.500
2000-05-01 10.900
2000-06-01 12.200
2000-07-01 9.100
2000-08-01 9.600
2000-09-01 11.400
2000-10-01 9.300
2000-11-01 8.900
2000-12-01 9.100
2001-01-01 8.100
2001-02-01 12.100
2001-03-01 8.500
2001-04-01 10.300
2001-05-01 10.600
2001-06-01 9.000
2001-07-01 10.400
2001-08-01 10.100
2001-09-01 7.500
2001-10-01 9.900
2001-11-01 13.200
2001-12-01 10.100
2002-01-01 14.700
2002-02-01 13.700
2002-03-01 14.200
2002-04-01 13.500
2002-05-01 12.800
2002-06-01 12.300
2002-07-01 13.100
2002-08-01 11.800
2002-09-01 9.600
2002-10-01 10.500
2002-11-01 10.600
2002-12-01 11.900
2003-01-01 10.400
2003-02-01 8.800
2003-03-01 7.200
2003-04-01 6.700
2003-05-01 5.600
2003-06-01 7.300
2003-07-01 7.000
2003-08-01 7.400
2003-09-01 11.300
2003-10-01 8.800
2003-11-01 9.200
2003-12-01 7.800
2004-01-01 5.100
2004-02-01 6.300
2004-03-01 5.400
2004-04-01 6.700
2004-05-01 9.400
2004-06-01 10.400
2004-07-01 8.700
2004-08-01 7.000
2004-09-01 7.800
2004-10-01 5.800
2004-11-01 7.800
2004-12-01 4.860
2005-01-01 5.620
2005-02-01 5.980
2005-03-01 4.560
2005-04-01 5.610
2005-05-01 5.800
2005-06-01 6.390
2005-07-01 4.970
2005-08-01 5.400
2005-09-01 5.660
2005-10-01 5.560
2005-11-01 7.400
2005-12-01 7.100
2006-01-01 6.300
2006-02-01 5.520
2006-03-01 5.800
2006-04-01 6.510
2006-05-01 5.190
2006-06-01 5.480
2006-07-01 5.570
2006-08-01 5.340
2006-09-01 6.200
2006-10-01 6.560
2006-11-01 6.900
2006-12-01 7.050
2007-01-01 5.710
2007-02-01 6.510
2007-03-01 5.700
2007-04-01 6.170
2007-05-01 6.000
2007-06-01 5.670
2007-07-01 6.260
2007-08-01 6.450
2007-09-01 7.700
2007-10-01 8.040
2007-11-01 8.270
2007-12-01 7.450
2008-01-01 6.040
2008-02-01 8.080
2008-03-01 6.940
2008-04-01 7.990
2008-05-01 8.000
2008-06-01 8.020
2008-07-01 7.730
2008-08-01 8.310
2008-09-01 9.680
2008-10-01 17.170
2008-11-01 18.200
2008-12-01 23.100
2009-01-01 27.830
2009-02-01 20.800
2009-03-01 14.800
2009-04-01 12.830
2009-05-01 11.200
2009-06-01 12.200
2009-07-01 10.400
2009-08-01 9.290
2009-09-01 10.910
2009-10-01 9.540
2009-11-01 8.140
2009-12-01 8.660
2010-01-01 7.170
2010-02-01 7.310
2010-03-01 6.300
2010-04-01 5.300
2010-05-01 4.700
2010-06-01 4.600
2010-07-01 4.200
2010-08-01 4.200
2010-09-01 4.300
2010-10-01 4.490
2010-11-01 4.640
2010-12-01 4.690
2011-01-01 4.633
2011-02-01 4.599
2011-03-01 4.540
2011-04-01 4.780
2011-05-01 4.374
2011-06-01 4.857
2011-07-01 5.840
2011-08-01 5.056
2011-09-01 5.813
2011-10-01 6.932
2011-11-01 7.050
2011-12-01 7.420
2012-01-01 7.569
2012-02-01 7.250
2012-03-01 6.932
2012-04-01 7.300
2012-05-01 7.166
2012-06-01 7.400
2012-07-01 6.895
2012-08-01 7.160
2012-09-01 7.166
2012-10-01 7.509
2012-11-01 7.631
2012-12-01 7.507
2013-01-01 7.300
2013-02-01 7.546
2013-03-01 7.800
2013-04-01 7.300
2013-05-01 7.328
2013-06-01 7.700
2013-07-01 7.700
2013-08-01 7.700
2013-09-01 7.700
2013-10-01 7.186
2013-11-01 7.200
2013-12-01 7.413
2014-01-01 7.235
2014-02-01 7.386
2014-03-01 8.900
2014-04-01 8.460
2014-05-01 9.240
2014-06-01 8.680
2014-07-01 8.730
2014-08-01 8.730
2014-09-01 9.000
2014-10-01 9.230
2014-11-01 10.770
2014-12-01 16.400
2015-01-01 21.910
2015-02-01 17.480
2015-03-01 15.810
2015-04-01 15.250
2015-05-01 13.480
2015-06-01 13.460
2015-07-01 13.350
2015-08-01 13.890
2015-09-01 12.520
2015-10-01 13.840
2015-11-01 13.290
2015-12-01 12.800
2016-01-01 12.680
2016-02-01 12.750
2016-03-01 12.340
2016-04-01 12.150
2016-05-01 12.670
2016-06-01 11.720
2016-07-01 10.790
2016-08-01 11.460
2016-09-01 10.700
2016-10-01 11.090
2016-11-01 10.430
2016-12-01 10.450
2017-01-01 10.320
2017-02-01 10.820
2017-03-01 10.580
2017-04-01 10.510
2017-05-01 8.170
2017-06-01 8.750
2017-07-01 8.720
2017-08-01 8.790
2017-09-01 8.670
2017-10-01 8.280
2017-11-01 8.320
2017-12-01 7.520
2018-01-01 7.200
2018-02-01 7.070
2018-03-01 7.070
2018-04-01 7.220
2018-05-01 6.990
2018-06-01 7.200
2018-07-01 7.100
2018-08-01 7.600
2018-09-01 8.200