Quarter	Number of Buildings, Seasonally Adjusted
1994-01-01	5974.076059844850
1994-04-01	6075.353705359720
1994-07-01	6437.588672730710
1994-10-01	6433.373588067360
1995-01-01	6557.790017302450
1995-04-01	7112.229947207060
1995-07-01	6234.780630641630
1995-10-01	6435.711941746750
1996-01-01	6768.190786334870
1996-04-01	7039.714239615490
1996-07-01	7143.164779484110
1996-10-01	8206.967398022500
1997-01-01	7907.897477434570
1997-04-01	8096.511121793920
1997-07-01	8603.476188791670
1997-10-01	8457.574943636370
1998-01-01	8485.273115130900
1998-04-01	9328.912928730570
1998-07-01	9940.571332778190
1998-10-01	9621.249653093030
1999-01-01	10778.181847310400
1999-04-01	10393.627393893900
1999-07-01	10414.435030174300
1999-10-01	10435.810467886600
2000-01-01	11364.653363910900
2000-04-01	10204.387277058200
2000-07-01	9663.515282045670
2000-10-01	9647.888543902740
2001-01-01	9446.687007754390
2001-04-01	10156.644978350500
2001-07-01	9739.480394370560
2001-10-01	8707.810113612460
2002-01-01	8440.892102126810
2002-04-01	7923.622645800690
2002-07-01	8535.895957189400
2002-10-01	6982.094780952150
2003-01-01	6839.288761520770
2003-04-01	6812.514662048090
2003-07-01	6724.317946911800
2003-10-01	6804.898151474320
2004-01-01	6117.300973935030
2004-04-01	6710.616260787010
2004-07-01	6065.976372326450
2004-10-01	6683.531930097360
2005-01-01	6904.490383747650
2005-04-01	5796.315599672310
2005-07-01	6052.870581685940
2005-10-01	6052.235700004090
2006-01-01	5887.711593527130
2006-04-01	6064.525638666940
2006-07-01	5945.776104102960
2006-10-01	6158.571657857180
2007-01-01	5852.395023005500
2007-04-01	5136.021426636380
2007-07-01	5612.454511230640
2007-10-01	5203.134270582960
2008-01-01	4777.971008460670
2008-04-01	4130.088040544750
2008-07-01	3452.723232306100
2008-10-01	2787.211162153890
2009-01-01	2500.514784994210
2009-04-01	2262.396932256380
2009-07-01	2116.863126897870
2009-10-01	2194.108860563980
2010-01-01	2221.499349192950
2010-04-01	2329.756415395780
2010-07-01	1953.103408057430
2010-10-01	1834.628636547680
2011-01-01	1695.220499511400
2011-04-01	1493.586647065940
2011-07-01	1381.343128425780
2011-10-01	1302.322332953400
2012-01-01	1161.186372172180
2012-04-01	959.313757902180
2012-07-01	915.643907304841
2012-10-01	774.256566374883
2013-01-01	673.386193765130
2013-04-01	634.190689394013
2013-07-01	650.391584053761
2013-10-01	531.242272294000
2014-01-01	554.458997833827
2014-04-01	556.858059779797
2014-07-01	575.395376397827
2014-10-01	630.062110339192
2015-01-01	697.876658317732
2015-04-01	659.831407845426
2015-07-01	691.645256348063
2015-10-01	789.267388165904
2016-01-01	807.464328794115
2016-04-01	1049.436673012010
2016-07-01	951.053846690736
2016-10-01	1034.686362414560
2017-01-01	1176.102317351740
2017-04-01	1159.634075533270
2017-07-01	1174.031277059800
2017-10-01	1202.890529343940
2018-01-01	1612.010287985590
2018-04-01	1649.555789210800