Year	Number of Buildings
1993-01-01	1003471333.333330
1994-01-01	1070385083.333330
1995-01-01	1193104000.000000
1996-01-01	1264797500.000000
1997-01-01	1154845916.666670
1998-01-01	1187790250.000000
1999-01-01	928604250.000000
2000-01-01	902344583.333333
2001-01-01	1012343416.666670
2002-01-01	1329755916.666670
2003-01-01	1437339000.000000
2004-01-01	1990353500.000000
2005-01-01	2641625333.333330
2006-01-01	3081676333.333330
2007-01-01	3282089000.000000
2008-01-01	3022213250.000000
2009-01-01	2300669000.000000
2010-01-01	1793728083.333330
2011-01-01	1751176250.000000
2012-01-01	1783924666.666670
2013-01-01	1896059916.666670