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CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
VOYAGE REVENUES(note 12b) | $ 392,251 | $ 379,975 | $ 374,008
OPERATING EXPENSES(note 12b) |  |  |
Voyage expenses | 1,772 | 1,387 | 2,042
Vessel operating expenses | 86,347 | 89,046 | 84,577
Depreciation and amortization | 99,825 | 91,919 | 89,347
General and administrative (notes 12a and 12b) | 27,149 | 24,120 | 23,247
Write down of vessels (note 20) | 29,367 |  |
Gain on sale of vessel (note 17) |  |  | (4,340)
Restructuring charge (note 18) |  |  | 175
Total operating expenses | 244,460 | 206,472 | 195,048
Income from vessel operations | 147,791 | 173,503 | 178,960
OTHER ITEMS |  |  |
Equity income (note 19) | 78,866 | 20,584 | 8,043
Interest expense (notes 6, 10 and 12a) | (54,211) | (49,880) | (49,019)
Interest income (note 6) | 3,502 | 6,687 | 7,190
Realized and unrealized loss on derivative instruments (note 13) | (29,620) | (63,030) | (78,720)
Foreign currency exchange (loss) gain (notes 10 and 13) | (8,244) | 10,310 | 27,545
Other income (expense) | 1,683 | (37) | 615
Total other items | (8,024) | (75,366) | (84,346)
Net income before income tax expense | 139,767 | 98,137 | 94,614
Income tax expense (note 11) | (625) | (781) | (1,670)
Net income | 139,142 | 97,356 | 92,944
Non-controlling interest in net income | 15,437 | 7,508 | 3,062
Dropdown Predecessor's interest in net income (note 2) |  |  | 2,258
General Partner's interest in net income | 21,303 | 11,474 | 8,896
Limited partners' interest in net income | 102,402 | 78,374 | 78,728
Limited partners' interest in net income per unit (note 16) |  |  |
Common unit (basic and diluted) | $ 1.54 | $ 1.33 | $ 1.46
Subordinated unit (basic and diluted) |  |  | $ 2.04
Total unit (basic and diluted) | $ 1.54 | $ 1.33 | $ 1.48
Weighted-average number of units outstanding: |  |  |
Common units (basic and diluted) | 66,328,496 | 59,147,422 | 51,481,035
Subordinated units (basic and diluted) |  |  | 1,816,591
Total units (basic and diluted) | 66,328,496 | 59,147,422 | 53,297,626
Cash distributions declared per common unit | $ 2.6550 | $ 2.5200 | $ 2.3700
Related party transactions (note 12) |  |  |

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