5. Notes Payable

General

Our senior unsecured notes consisted of the following at September 30, 2011 and December 31, 2010, sorted by maturity date (dollars in millions):

	September 30, 2011		December 31, 2010
5.375% notes, issued in March 2003 and due in March 2013	$	100	$	100
5.5% notes, issued in November 2003 and due in November 2015		150		150
5.95% notes, issued in September 2006 and due in September 2016		275		275
5.375% notes, issued in September 2005 and due in September 2017		175		175
6.75% notes, issued in September 2007 and due in August 2019		550		550
5.75% notes, issued in June 2010 and due in January 2021		250		250
5.875% bonds, $100 issued in March 2005 and $150 issued in June 2011, both due in March 2035		250		100
	$	1,750	$	1,600

B.	Re-opening of Unsecured Bonds due 2035

In June 2011, we re-opened our 5.875% senior unsecured bonds due 2035, or the 2035 Bonds, and issued $150.0 million in aggregate principal amount of these 2035 Bonds. The public offering price for the additional 2035 Bonds was 94.578% of the principal amount for an effective yield of 6.318%. Those 2035 Bonds constituted an additional issuance of, and a single series with, the $100 million in aggregate principal amount of the 2035 Bonds that we issued in March 2005. The net proceeds of approximately $140.1 million were used to fund property acquisitions. Interest is paid semiannually on the 2035 Bonds.

C.	Note Issuance

In June 2010, we issued $250.0 million in aggregate principal amount of 5.75% senior unsecured notes due January 2021, or the 2021 Notes. The public offering price for the 2021 Notes was 99.404% of the principal amount for an effective yield of 5.826%. The net proceeds of approximately $246.1 million from this offering were used to repay borrowings under our acquisition credit facility, which were incurred to finance the acquisition of our properties. Interest is paid semiannually on the 2021 Notes.