results of operations

The following table illustrates our gross profit margins by services and products: For the years ended December 31,
							2007			2006			2005
Transportation								18.4	%		17.8	%		16.3	%
Sourcing								7.7			7.9			8.2
Information Services								100.0			100.0			100.0
Total								17.0	%		16.5	%		15.5	%
The following table summarizes our gross profits by service line: For the years ended December 31, (Dollars in thousands)
	2007			2006			Change			2005			Change
Gross profits:    Transportation       Truck	$	949,277		$	822,954			15.3	%	$	666,605			23.5	%
Intermodal		38,670			36,176			6.9			31,392			15.2
Ocean		43,530			37,150			17.2			29,182			27.3
Air		31,315			21,533			45.4			13,321			61.6
Miscellaneous		35,240			28,152			25.2			19,824			42.0
Total Transportation		1,098,032			945,965			16.1			760,324			24.4
Sourcing		100,220			94,229			6.4			81,459			15.7
Information Services		45,526			42,350			7.5			37,967			11.5
Total	$	1,243,778		$	1,082,544			14.9	%	$	879,750			23.1	%
The following table represents certain statements of operations data, shown as percentages of our gross profits: For the years ended December 31,
							2007			2006			2005
Gross profits								100.0	%		100.0	%		100.0	%
Selling, general, and administrative expenses:    Personnel expenses								45.7			47.7			48.6
Other selling, general, and administrative expenses								13.4			13.7			14.3
Total selling, general, and administrative expenses								59.1			61.4			62.9
Income from operations								40.9			38.6			37.1
Investment and other income								1.2			1.1			0.7
Income before provision for income taxes								42.1			39.7			37.8
Provision for income taxes								16.0			15.0			14.7
Net income								26.1	%		24.7	%		23.1	%