For the years ended December 31 (In millions, except per share data; unaudited)	2013	2012	2011	2010	2009
Performance
Net sales	$2,510.8	$2,097.7	$2,016.7	$1,854.5	$1,782.0
Earnings before interest, taxes, depreciation, and amortization	356.5	255.6	276.0	247.2	243.7
Net earnings	138.0	92.3	118.6	97.9	93.2
Cash flow from operations	237.8	152.5	201.9	171.5	196.6
Earnings per share
Basic	$2.94	$1.98	$2.56	$2.14	$2.06
Diluted	2.88	1.95	2.52	2.12	2.04
Dividends per share	0.39	0.35	0.32	0.32	0.32
Operating margin	9.3%	7.7%	9.3%	9.0%	9.3%
Return on invested capital¹	7.4%	6.0%	8.7%	7.8%	8.0%
New orders	$2,508.4	$1,981.0	$2,029.4	$1,887.5	$1,730.5
Backlog at year end	$1,715.6	$1,653.9	$1,694.7	$1,670.0	$1,626.9
Year-end financial position
Working capital	$802.7	$536.1	$638.5	$452.4	$313.2
Current ratio²	2.5	1.8	2.2	2.0	1.6
Total assets	$3,458.3	$3,114.6	$2,635.5	$2,233.1	$2,138.0
Total debt	$959.9	$880.2	$586.4	$396.6	$465.1
Stockholders’ equity	$1,552.7	$1,312.6	$1,205.0	$1,140.1	$1,011.1
Stockholders’ equity per share	$32.59	$28.26	$25.92	$24.71	$22.16
Other year-end data
Free cash flow	$165.6	$69.5	$117.5	$118.7	$121.0
Depreciation and amortization	$121.5	$93.9	$88.3	$79.9	$76.5
Capital expenditures	$72.2	$83.0	$84.3	$52.8	$75.6
Shares of stock outstanding at December 31	47.6	46.5	46.5	46.1	45.6
Number of registered shareholders²	4,605	4,796	5,347	5,470	5,797
Number of employees²	9,761	9,328	8,883	7,588	7,572
Note: Amounts may not add due to rounding. (1) Return on invested capital is equal to net operating profit after-tax over two-year average net debt plus equity. (2) Actual number, not in millions.