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CONSOLIDATED STATEMENTS OF INCOME - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Retail revenues | $ 23,505,619 | $ 23,254,757 | $ 24,104,932
Bulk revenues | 29,647,034 | 31,854,255 | 39,201,011
Services revenues | 4,723,054 | 2,007,190 | 2,253,135
Total revenues | 57,875,707 | 57,116,202 | 65,559,078
Cost of retail revenues | 10,294,298 | 10,543,972 | 11,521,277
Cost of bulk revenues | 19,488,550 | 21,634,789 | 27,985,441
Cost of services revenues | 3,841,973 | 1,629,221 | 2,580,260
Total cost of revenues | 33,624,821 | 33,807,982 | 42,086,978
Gross profit | 24,250,886 | 23,308,220 | 23,472,100
General and administrative expenses | 18,677,584 | 14,840,156 | 17,011,041
Impairment loss on long-lived assets | 2,000,000 | 0 | 0
Impairment of goodwill | 1,750,000 | 0 | 0
Income from operations | 1,823,302 | 8,468,064 | 6,461,059
Other income (expense): |  |  |
Interest income | 609,750 | 1,013,252 | 1,440,631
Interest expense | (104,048) | (269,090) | (488,770)
Profit sharing income from OC-BVI | 125,550 | 105,300 | 111,375
Equity in earnings of OC-BVI | 337,809 | 294,368 | 303,380
Impairment loss on investment in OC-BVI | (925,000) | (1,060,000) | (860,000)
Unrealized loss on put/call option | (297,000) | 0 | 0
Other | 670,893 | (626,400) | (203,135)
Other income (expense), net | 417,954 | (542,570) | 303,481
Income before income taxes | 2,241,256 | 7,925,494 | 6,764,540
Provision for (benefit from) income taxes | (536,057) | 0 | 0
Net income | 2,777,313 | 7,925,494 | 6,764,540
Income (loss) attributable to non-controlling interests | (1,183,188) | 406,793 | 499,182
Net income attributable to Consolidated Water Co. Ltd. stockholders | $ 3,960,501 | $ 7,518,701 | $ 6,265,358
Basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders | $ 0.27 | $ 0.51 | $ 0.43
Diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders | 0.27 | 0.51 | 0.42
Dividends declared per common share | $ 0.30 | $ 0.3 | $ 0.3
Weighted average number of common shares used in the determination of: |  |  |
Basic earnings per share | 14,809,909 | 14,741,748 | 14,697,896
Diluted earnings per share | 14,944,028 | 14,827,755 | 14,764,323

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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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