Quarter	Number of Buildings, Seasonally Adjusted
1992-01-01	17945.33723273780
1992-04-01	19881.65415982360
1992-07-01	17559.53222923450
1992-10-01	17018.34771752210
1993-01-01	18471.83156484880
1993-04-01	17817.74737014520
1993-07-01	17445.19143735580
1993-10-01	18208.16463941440
1994-01-01	19227.04479854100
1994-04-01	21324.28883016560
1994-07-01	23766.40580994660
1994-10-01	25928.71002407630
1995-01-01	26897.63244449230
1995-04-01	27308.41147129050
1995-07-01	24682.52932204300
1995-10-01	23760.04772787020
1996-01-01	23302.69235211690
1996-04-01	22331.85407275850
1996-07-01	23825.84818810130
1996-10-01	24262.93239675870
1997-01-01	24979.33473121150
1997-04-01	24879.43567627800
1997-07-01	27778.23563076560
1997-10-01	34756.06106739460
1998-01-01	30709.86724607790
1998-04-01	35683.61794002260
1998-07-01	37883.86349968990
1998-10-01	38732.30180701920
1999-01-01	41110.76030729690
1999-04-01	43986.95912351520
1999-07-01	42682.92975156310
1999-10-01	43590.64123472940
2000-01-01	46116.84879826260
2000-04-01	50461.14856476970
2000-07-01	42223.23755063520
2000-10-01	40538.14207284240
2001-01-01	42391.22737634230
2001-04-01	40261.97224059830
2001-07-01	42392.94117638250
2001-10-01	42466.95839709030
2002-01-01	41831.77551748920
2002-04-01	42168.19927898560
2002-07-01	45788.60911118700
2002-10-01	45219.36926773390
2003-01-01	50586.71055936750
2003-04-01	52936.16759286080
2003-07-01	49920.06899567810
2003-10-01	56996.02760040720
2004-01-01	53473.47870451190
2004-04-01	57845.40415219940
2004-07-01	58456.98349397820
2004-10-01	56954.98671947000
2005-01-01	58565.09637618200
2005-04-01	60699.97184958340
2005-07-01	61149.02319235180
2005-10-01	63580.81260295180
2006-01-01	66773.34233835810
2006-04-01	66279.49397644820
2006-07-01	95092.85510565580
2006-10-01	62506.20124010330
2007-01-01	71944.71475815380
2007-04-01	56982.53487980230
2007-07-01	47345.14289003650
2007-10-01	39828.90708531910
2008-01-01	30303.75574803120
2008-04-01	24347.75175418750
2008-07-01	17269.37071285630
2008-10-01	15788.10117114640
2009-01-01	10632.56878043330
2009-04-01	9431.38182358486
2009-07-01	8215.79588675143
2009-10-01	8605.66124174516
2010-01-01	7988.43910633394
2010-04-01	8307.08621474066
2010-07-01	7329.31320580410
2010-10-01	6872.44257841181
2011-01-01	7355.85976072020
2011-04-01	6819.60545413374
2011-07-01	6837.27631022053
2011-10-01	5336.26779302532
2012-01-01	4591.46916197166
2012-04-01	3726.84805953899
2012-07-01	3539.73595565148
2012-10-01	2950.06913506594
2013-01-01	3364.45554097370
2013-04-01	2638.69610862132
2013-07-01	2583.47360380529
2013-10-01	2781.04695001770
2014-01-01	2744.80324183622
2014-04-01	3104.34061869381
2014-07-01	3265.96741769062
2014-10-01	2466.60702506646
2015-01-01	3429.26721228132
2015-04-01	4258.65783145820
2015-07-01	4374.08694954215
2015-10-01	4650.48214981523
2016-01-01	5318.87244862344
2016-04-01	5290.09719523945
2016-07-01	5112.77168068647
2016-10-01	5658.35662145280
2017-01-01	6136.48824548406
2017-04-01	6736.87798467016
2017-07-01	7157.71997043796
2017-10-01	7029.66489255441
2018-01-01	7419.35063519071
2018-04-01	8381.34852039031