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Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales
Product Sales	$ 2,135,051	$ 1,957,879	$ 1,865,884
Service Sales	590,002	550,378	529,563
Net Sales	2,725,053	2,508,257	2,395,447
Cost of sales
Products Cost of Sales	833,793	767,753	744,867
Service Cost of Sales	317,947	304,917	298,587
Gross profit	1,573,313	1,435,587	1,351,993
Research and development	129,265	119,968	119,076
Selling, general and administrative	787,464	732,622	700,810
Amortization	42,671	36,052	30,951
Interest Expense	32,785	28,026	27,451
Restructuring Charges	12,772	6,235	11,148
Other Charges (Income), Net	(5,866)	8,491	(867)
Earnings Before Taxes	574,222	504,193	463,424
Provision for taxes	198,250	119,823	110,604
Net earnings	$ 375,972	$ 384,370	$ 352,820
Basic earnings per common share:
Net earnings	$ 14.62	$ 14.49	$ 12.75
Weighted average number of common shares	25,713,575	26,517,768	27,680,918
Diluted earnings per common share:
Net earnings	$ 14.24	$ 14.22	$ 12.48
Weighted average number of common and common equivalent shares	26,393,783	27,023,905	28,269,615

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