EXHIBIT 11 – COMPUTATION OF EARNINGS PER SHARE

In thousands of dollars, except per share data

			Six Months Ended June 30,						Three Months Ended June 30,
			2003			2002			2003			2002
Numerator:
	Income before cumulative effect of a change in accounting principle		$	322,346		$	328,365		$	251,300		$	238,036
	Cumulative effect of a change in accounting principle			—			(16,778,526	)		—			—
	Net income (loss)			322,346			(16,450,161	)		251,300			238,036
	Effect of dilutive securities:
		Convertible debt – 2.625% issued in 1998		2,106			4,679			—			2,340
		Convertible debt – 1.5% issued in 1999		—			4,650			—			2,325
		LYONS – 1998 issue		1,446	*		2,379	*		230	*		1,195
		Less: Anti-dilutive items		(1,446	)		(2,379	)		(230	)		—
Numerator for net income before cumulative effect of a change in accounting principle per common share — diluted			$	324,452		$	337,694		$	251,300		$	243,896
Numerator for cumulative effect of a change in accounting principle per common share - diluted				—			(16,778,526	)		—			—
Numerator for net income (loss) per common share — diluted				324,452			(16,440,832	)		251,300			243,896
Denominator:
	Weighted average common shares			613,961			600,916			614,361			602,618
	Effect of dilutive securities:
		Stock options and common stock warrants		3,078			5,005			3,195			4,795
		Convertible debt – 2.625% issued in 1998		4,154			9,282			—			9,282
		Convertible debt – 1.5% issued in 1999		—			9,454			—			9,454
		LYONS – 1998 issue		1,798	*		3,085	*		563	*		3,085
		Less: Anti-dilutive items		(1,798	)		(3,085	)		(563	)		—
Denominator for net income (loss) per common share — diluted				621,193			624,657			617,556			629,234
Net income (loss) per common share:
		Income (loss) before cumulative effect of a change in accounting principle - Basic	$	.53		$	.55		$	.41		$	.40
		Cumulative effect of a change in accounting principle — Basic		—			(27.92	)		—			—
		Net income (loss) — Basic	$	.53		$	(27.37	)	$	.41		$	.40
		Income (loss) before cumulative effect of a change in accounting principle - Diluted	$	.52		$	.54		$	.41		$	.39
		Cumulative effect of a change in accounting principle — Diluted		—			(26.86	)		—			—
		Net income (loss) — Diluted	$	.52		$	(26.32	)	$	.41		$	.39

* Denotes items that are anti-dilutive to the calculation of earnings per share.