Annual Number of Buildings
1972-01-01 21509.27216641300
1973-01-01 24773.21004819890
1974-01-01 22967.08795788940
1975-01-01 21707.26950786400
1976-01-01 19931.32993911720
1977-01-01 18549.57410197870
1978-01-01 18982.39146118720
1979-01-01 14307.72252156270
1980-01-01 15612.15073845760
1981-01-01 15092.46808219180
1982-01-01 13737.27286402840
1983-01-01 14095.84122019280
1984-01-01 12197.96426433280
1985-01-01 13418.12288102490
1986-01-01 12956.39066615930
1987-01-01 15158.86962962960
1988-01-01 16337.13490639270
1989-01-01 17226.91564205990
1990-01-01 14450.84803881280
1991-01-01 12305.77623135460
1992-01-01 12708.10924378490
1993-01-01 11894.02627219690
1994-01-01 14180.47301065450
1995-01-01 18263.44379756470
1996-01-01 17330.80388127850
1997-01-01 19483.42131912730
1998-01-01 24581.24921106040
1999-01-01 30815.14721461190
2000-01-01 32214.40891425670
2001-01-01 31614.98403602230
2002-01-01 32770.37096144090
2003-01-01 37559.12983257230
2004-01-01 41467.82673997970
2005-01-01 43237.85053450020
2006-01-01 45888.17775291730
2007-01-01 37183.41780416030
2008-01-01 19829.91666666670
2009-01-01 6685.83333333333
2010-01-01 5257.50000000000
2011-01-01 4329.66666666667
2012-01-01 2881.66666666667
2013-01-01 2436.00000000000
2014-01-01 2676.66666666667
2015-01-01 3771.58333333333
2016-01-01 4831.58333333333