Annual Number of Buildings
1960-01-01 18000.00
1961-01-01 19100.00
1962-01-01 23150.00
1963-01-01 21700.00
1964-01-01 24225.00
1965-01-01 23250.00
1966-01-01 23525.00
1967-01-01 24950.00
1968-01-01 26850.00
1969-01-01 26375.00
1970-01-01 22177.50
1971-01-01 26146.25
1972-01-01 24653.00
1973-01-01 20046.75
1974-01-01 20245.75
1975-01-01 12836.25
1976-01-01 14304.50
1977-01-01 13488.50
1978-01-01 14323.50
1979-01-01 14009.00
1980-01-01 12527.75
1981-01-01 11113.50
1982-01-01 10482.25
1983-01-01 9444.00
1984-01-01 8517.00
1985-01-01 6884.75
1986-01-01 7691.50
1987-01-01 9953.50
1988-01-01 12705.75
1989-01-01 14719.75
1990-01-01 17406.50
1991-01-01 14213.75
1992-01-01 12365.75
1993-01-01 2977.75
1994-01-01 2965.00
1995-01-01 3183.75
1996-01-01 3189.25
1997-01-01 2993.00
1998-01-01 3157.75
1999-01-01 3642.25
2000-01-01 4205.75
2001-01-01 4850.25
2002-01-01 4762.75
2003-01-01 5513.00
2004-01-01 6829.75
2005-01-01 7946.75
2006-01-01 11316.00
2007-01-01 6892.50
2008-01-01 5303.75
2009-01-01 4492.50
2010-01-01 6887.75
2011-01-01 6682.25
2012-01-01 5330.25
2013-01-01 7628.50
2014-01-01 9185.25
2015-01-01 11976.00
2016-01-01 15001.50
2017-01-01 15870.75
