The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:



	Year Ended December 31,
(in thousands, except per share amounts)	2013			2012			2011
Earnings per share calculation – basic
Income from continuing operations attributable to common shareholders	$	151,594		$	154,116		$	7,383
Amount allocated to participating securities	(3,177		)	(2,784		)	(551		)
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	148,417		$	151,332		$	6,832
Income from discontinued operations, including gain on sale, attributable to common shareholders	184,770			129,274			41,996
Net income attributable to common shareholders, as adjusted	$	333,187		$	280,606		$	48,828

Income from continuing operations attributable to common shareholders,as adjusted – per share	$	1.70		$	1.81		$	0.09
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share	2.12			1.54			0.58
Net income attributable to common shareholders, as adjusted – per share	$	3.82		$	3.35		$	0.67

Weighted average number of common shares outstanding – basic	87,204			83,772			72,756



	Year Ended December 31,
(in thousands, except per share amounts)	2013		2012		2011
Earnings per share calculation – diluted
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	148,417	$	151,332	$	6,832
Income allocated to common units from continuing operations	1,133		1,984		—
Income from continuing operations attributable to common shareholders, as adjusted	$	149,550	$	153,316	$	6,832
Income from discontinued operations, including gain on sale, attributable to common shareholders	184,770		129,274		41,996
Net income attributable to common shareholders, as adjusted	$	334,320	$	282,590	$	48,828

Income from continuing operations attributable to common shareholders, as adjusted – per share	$	1.69	$	1.79	$	0.09
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share	2.09		1.51		0.57
Net income attributable to common shareholders, as adjusted – per share	$	3.78	$	3.30	$	0.66

Weighted average number of common shares outstanding – basic	87,204		83,772		72,756
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	476		647		706
Common units	814		1,137		—
Weighted average number of common shares outstanding – diluted	88,494		85,556		73,462