Annual Number of Buildings
1990-01-01 33467.500000000000
1991-01-01 33527.500000000000
1992-01-01 32292.499999999996
1993-01-01 37932.500000000000
1994-01-01 41290.000000000000
1995-01-01 33842.500000000000
1996-01-01 36342.500000000000
1997-01-01 39392.500000000000
1998-01-01 37267.500000000000
1999-01-01 37135.000000000000
2000-01-01 35545.000000000000
2001-01-01 36695.000000000000
2002-01-01 37675.000000000000
2003-01-01 40345.000000000000
2004-01-01 44192.500000000000
2005-01-01 43530.000000000000
2006-01-01 42535.000000000000
2007-01-01 45925.000000000000
2008-01-01 26482.500000000000
2009-01-01 21532.500000000000
2010-01-01 27472.500000000000
2011-01-01 28405.000000000000
2012-01-01 25352.500000000000
2013-01-01 31235.000000000000
2014-01-01 35030.000000000000
2015-01-01 36975.000000000000
2016-01-01 39107.500000000000
2017-01-01 41132.500000000000