Month	Percent
1987-01-01	4.500000000
1987-02-01	4.700000000
1987-03-01	4.000000000
1987-04-01	4.400000000
1987-05-01	3.700000000
1987-06-01	3.800000000
1987-07-01	4.100000000
1987-08-01	3.600000000
1987-09-01	4.100000000
1987-10-01	3.900000000
1987-11-01	3.200000000
1987-12-01	2.600000000
1988-01-01	3.600000000
1988-02-01	3.300000000
1988-03-01	3.500000000
1988-04-01	3.800000000
1988-05-01	3.400000000
1988-06-01	3.700000000
1988-07-01	4.000000000
1988-08-01	3.500000000
1988-09-01	4.000000000
1988-10-01	3.500000000
1988-11-01	3.300000000
1988-12-01	2.900000000
1989-01-01	3.500000000
1989-02-01	3.000000000
1989-03-01	2.900000000
1989-04-01	3.000000000
1989-05-01	3.000000000
1989-06-01	2.800000000
1989-07-01	3.100000000
1989-08-01	3.100000000
1989-09-01	3.300000000
1989-10-01	2.700000000
1989-11-01	2.400000000
1989-12-01	2.300000000
1990-01-01	2.600000000
1990-02-01	2.400000000
1990-03-01	2.400000000
1990-04-01	2.700000000
1990-05-01	2.700000000
1990-06-01	3.000000000
1990-07-01	3.600000000
1990-08-01	3.000000000
1990-09-01	2.800000000
1990-10-01	3.300000000
1990-11-01	2.300000000
1990-12-01	2.100000000
1991-01-01	2.800000000
1991-02-01	2.500000000
1991-03-01	2.900000000
1991-04-01	2.600000000
1991-05-01	2.300000000
1991-06-01	2.100000000
1991-07-01	2.700000000
1991-08-01	3.200000000
1991-09-01	3.100000000
1991-10-01	3.200000000
1991-11-01	2.700000000
1991-12-01	2.200000000
1992-01-01	2.900000000
1992-02-01	3.200000000
1992-03-01	2.700000000
1992-04-01	2.700000000
1992-05-01	2.900000000
1992-06-01	2.700000000
1992-07-01	3.100000000
1992-08-01	2.500000000
1992-09-01	2.800000000
1992-10-01	2.800000000
1992-11-01	2.900000000
1992-12-01	2.200000000
1993-01-01	3.200000000
1993-02-01	3.500000000
1993-03-01	3.600000000
1993-04-01	3.000000000
1993-05-01	3.300000000
1993-06-01	3.200000000
1993-07-01	3.600000000
1993-08-01	3.900000000
1993-09-01	4.000000000
1993-10-01	3.700000000
1993-11-01	3.200000000
1993-12-01	2.900000000
1994-01-01	3.800000000
1994-02-01	3.700000000
1994-03-01	3.600000000
1994-04-01	3.800000000
1994-05-01	3.200000000
1994-06-01	3.300000000
1994-07-01	3.900000000
1994-08-01	3.600000000
1994-09-01	3.800000000
1994-10-01	3.900000000
1994-11-01	3.900000000
1994-12-01	3.200000000
1995-01-01	4.500000000
1995-02-01	5.300000000
1995-03-01	5.700000000
1995-04-01	6.300000000
1995-05-01	6.600000000
1995-06-01	6.600000000
1995-07-01	7.300000000
1995-08-01	7.600000000
1995-09-01	7.300000000
1995-10-01	6.700000000
1995-11-01	5.800000000
1995-12-01	5.500000000
1996-01-01	6.400000000
1996-02-01	6.300000000
1996-03-01	6.000000000
1996-04-01	5.900000000
1996-05-01	5.400000000
1996-06-01	5.600000000
1996-07-01	5.800000000
1996-08-01	5.300000000
1996-09-01	5.500000000
1996-10-01	5.200000000
1996-11-01	4.800000000
1996-12-01	4.100000000
1997-01-01	4.500000000
1997-02-01	4.220000000
1997-03-01	4.190000000
1997-04-01	4.290000000
1997-05-01	3.900000000
1997-06-01	3.400000000
1997-07-01	4.090000000
1997-08-01	3.500000000
1997-09-01	3.410000000
1997-10-01	3.230000000
1997-11-01	3.270000000
1997-12-01	2.820000000
1998-01-01	3.590000000
1998-02-01	3.530000000
1998-03-01	3.390000000
1998-04-01	3.050000000
1998-05-01	3.200000000
1998-06-01	3.360000000
1998-07-01	3.200000000
1998-08-01	3.020000000
1998-09-01	3.280000000
1998-10-01	3.110000000
1998-11-01	2.590000000
1998-12-01	2.600000000
1999-01-01	2.850000000
1999-02-01	3.200000000
1999-03-01	2.710000000
1999-04-01	2.700000000
1999-05-01	2.440000000
1999-06-01	2.580000000
1999-07-01	2.260000000
1999-08-01	2.490000000
1999-09-01	2.240000000
1999-10-01	2.500000000
1999-11-01	2.090000000
1999-12-01	2.000000000
2000-01-01	2.280000000
2000-02-01	2.430000000
2000-03-01	2.150000000
2000-04-01	2.710000000
2000-05-01	2.500000000
2000-06-01	2.460000000
2000-07-01	2.580000000
2000-08-01	3.050000000
2000-09-01	2.930000000
2000-10-01	2.600000000
2000-11-01	2.210000000
2000-12-01	2.170000000
2001-01-01	2.710000000
2001-02-01	3.230000000
2001-03-01	2.700000000
2001-04-01	2.630000000
2001-05-01	2.540000000
2001-06-01	2.480000000
2001-07-01	2.970000000
2001-08-01	2.580000000
2001-09-01	2.800000000
2001-10-01	2.990000000
2001-11-01	2.810000000
2001-12-01	2.640000000
2002-01-01	3.580000000
2002-02-01	3.060000000
2002-03-01	3.050000000
2002-04-01	2.970000000
2002-05-01	2.840000000
2002-06-01	2.770000000
2002-07-01	3.080000000
2002-08-01	3.110000000
2002-09-01	3.200000000
2002-10-01	2.930000000
2002-11-01	2.810000000
2002-12-01	2.340000000
2003-01-01	3.080000000
2003-02-01	3.010000000
2003-03-01	3.140000000
2003-04-01	3.010000000
2003-05-01	2.870000000
2003-06-01	3.000000000
2003-07-01	3.830000000
2003-08-01	4.090000000
2003-09-01	4.190000000
2003-10-01	3.940000000
2003-11-01	3.770000000
2003-12-01	2.940000000
2004-01-01	4.010000000
2004-02-01	4.120000000
2004-03-01	3.940000000
2004-04-01	3.880000000
2004-05-01	3.450000000
2004-06-01	3.650000000
2004-07-01	4.110000000
2004-08-01	4.440000000
2004-09-01	4.180000000
2004-10-01	4.080000000
2004-11-01	3.610000000
2004-12-01	3.520000000
2005-01-01	4.222061896
2005-02-01	3.786483556
2005-03-01	3.604080920
2005-04-01	3.707517887
2005-05-01	3.304159031
2005-06-01	3.646922192
2005-07-01	4.114455436
2005-08-01	3.677263768
2005-09-01	3.696344633
2005-10-01	3.559745536
2005-11-01	3.006339294
2005-12-01	2.824050380
2006-01-01	3.543762172
2006-02-01	3.730581507
2006-03-01	3.443678452
2006-04-01	3.312836974
2006-05-01	2.874070444
2006-06-01	3.337207033
2006-07-01	3.960011032
2006-08-01	4.023363933
2006-09-01	3.984211278
2006-10-01	3.889907839
2006-11-01	3.578013997
2006-12-01	3.483277082
2007-01-01	3.975833045
2007-02-01	4.037071565
2007-03-01	3.992609879
2007-04-01	3.605625508
2007-05-01	3.228551812
2007-06-01	3.270075597
2007-07-01	3.954062859
2007-08-01	3.909288074
2007-09-01	3.888820211
2007-10-01	3.924971532
2007-11-01	3.469462934
2007-12-01	3.402874008
2008-01-01	4.041300508
2008-02-01	3.917196419
2008-03-01	3.814786143
2008-04-01	3.613181022
2008-05-01	3.258035734
2008-06-01	3.537819554
2008-07-01	4.143080821
2008-08-01	4.160787448
2008-09-01	4.259477025
2008-10-01	4.133447388
2008-11-01	4.480658669
2008-12-01	4.336086225
2009-01-01	5.014443680
2009-02-01	5.314181074
2009-03-01	4.772818088
2009-04-01	5.261691215
2009-05-01	5.320694287
2009-06-01	5.163366057
2009-07-01	6.112121391
2009-08-01	6.291136359
2009-09-01	6.431515168
2009-10-01	5.975275638
2009-11-01	5.276439919
2009-12-01	4.815129034
2010-01-01	5.877217808
2010-02-01	5.449078632
2010-03-01	4.816463881
2010-04-01	5.407558496
2010-05-01	5.116015735
2010-06-01	5.054544785
2010-07-01	5.725300828
2010-08-01	5.450673937
2010-09-01	5.705832177
2010-10-01	5.719997323
2010-11-01	5.295292869
2010-12-01	4.952532087
2011-01-01	5.441048905
2011-02-01	5.393495518
2011-03-01	4.603973872
2011-04-01	5.123391248
2011-05-01	5.185307588
2011-06-01	5.426753004
2011-07-01	5.606663675
2011-08-01	5.806953740
2011-09-01	5.694485574
2011-10-01	5.006940427
2011-11-01	4.991219990
2011-12-01	4.522639717
2012-01-01	4.903933221
2012-02-01	5.342590323
2012-03-01	4.627159665
2012-04-01	4.855232413
2012-05-01	4.832164483
2012-06-01	4.820331780
2012-07-01	5.005718120
2012-08-01	5.392504270
2012-09-01	5.021039919
2012-10-01	5.037679987
2012-11-01	5.130204003
2012-12-01	4.464669745
2013-01-01	5.419867294
2013-02-01	4.848987563
2013-03-01	4.518862870
2013-04-01	5.056381307
2013-05-01	4.929217976
2013-06-01	4.999534974
2013-07-01	5.131585829
2013-08-01	5.183106216
2013-09-01	5.305092998
2013-10-01	5.009783726
2013-11-01	4.484621781
2013-12-01	4.266551251
2014-01-01	5.068519565
2014-02-01	4.661563220
2014-03-01	4.796106675
2014-04-01	4.851874910
2014-05-01	4.942158610
2014-06-01	4.815086206
2014-07-01	5.470443537
2014-08-01	5.188949860
2014-09-01	5.092203696
2014-10-01	4.775495604
2014-11-01	4.527685274
2014-12-01	3.757405831
2015-01-01	4.513125535
2015-02-01	4.325171574
2015-03-01	3.862976622
2015-04-01	4.313731127
2015-05-01	4.446131736
2015-06-01	4.405239215
2015-07-01	4.717360997
2015-08-01	4.680484762
2015-09-01	4.497630490
2015-10-01	4.551229661
2015-11-01	3.959558451
2015-12-01	3.962674741
2016-01-01	4.236368701
2016-02-01	4.145911360
2016-03-01	3.737723554
2016-04-01	3.798957663
2016-05-01	4.033813097
2016-06-01	3.930338964
2016-07-01	4.007087176
2016-08-01	4.003833200
2016-09-01	4.138391943
2016-10-01	3.670930129
2016-11-01	3.514867935
2016-12-01	3.371028601
2017-01-01	3.592488200
2017-02-01	3.371294104
2017-03-01	3.188721603
2017-04-01	3.464705192
2017-05-01	3.562267572
2017-06-01	3.266707102
2017-07-01	3.410341281
2017-08-01	3.525647580
2017-09-01	3.597531754
2017-10-01	3.501770644
2017-11-01	3.419214111
2017-12-01	3.127861216
2018-01-01	3.389191577
2018-02-01	3.205057180
2018-03-01	2.939629089
2018-04-01	3.398701005
2018-05-01	3.221848066
2018-06-01	3.385275941
2018-07-01	3.477638876
2018-08-01	3.468524071
2018-09-01	3.600372538