Property: (Tables)

12 Months Ended

Dec. 31, 2012

Property:

Components of property

	2012			2011
Land	$	1,572,621		$	1,273,649
Buildings and improvements		6,417,674			5,440,394
Tenant improvements		496,203			442,862
Equipment and furnishings		149,959			123,098
Construction in progress		376,249			209,732
		9,012,706			7,489,735
Less accumulated depreciation		(1,533,160	)		(1,410,692	)
	$	7,479,546		$	6,079,043