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Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
May. 31, 2015 | May. 31, 2014 | May. 31, 2013
Net Sales | [1] | $ 4,594,550 | $ 4,376,353 | $ 4,078,655
Cost of Sales |  | 2,653,181 | 2,500,585 | 2,375,936
Gross Profit |  | 1,941,369 | 1,875,768 | 1,702,719
Selling, General and Administrative Expenses |  | 1,422,944 | 1,390,128 | 1,309,235
Loss Contingency |  |  |  | 65,134
Restructuring Expense |  |  |  | 20,072
Interest Expense |  | 87,615 | 80,951 | 79,846
Investment (Income), Net |  | (18,577) | (15,715) | (6,178)
Other (Income) Expense, Net |  | (3,866) | (4,083) | 57,719
Income (Expense) Before Income Taxes | [2] | 453,253 | 424,487 | 176,891
Provision for Income Taxes |  | 224,925 | 118,503 | 67,040
Net Income |  | 228,328 | 305,984 | 109,851
Less: Net (Loss) Income Attributable to Noncontrolling Interests |  | (11,156) | 14,324 | 11,248
Net Income Attributable to RPM International Inc. Stockholders |  | $ 239,484 | $ 291,660 | $ 98,603
Average Number of Shares of Common Stock Outstanding: |  |  |  |
Basic |  | 129,933 | 129,438 | 128,956
Diluted |  | 134,893 | 132,288 | 129,801
Earnings per Share of Common Stock Attributable to RPM International Inc. Stockholders: |  |  |  |
Basic |  | $ 1.81 | $ 2.20 | $ 0.75
Diluted |  | 1.78 | 2.18 | 0.74
Cash Dividends Declared per Share of Common Stock |  | $ 1.020 | $ 0.945 | $ 0.890
[1] | It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.
[2] | The presentation includes a reconciliation of Income (Loss) Before Income Taxes, a measure defined by Generally Accepted Accounting Principles (GAAP) in the United States, to EBIT.

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