20. | Earnings per share |
| | For the year ended | | For the year ended | | For the year ended | | |||
| | December 31, 2017 | | December 31, 2016 | | December 31, 2015 | | |||
| | US$(000) | | US$(000) | | US$(000) | | |||
| | | | | | | | | | |
Profit for the period (US$) | | | 349,881,000 | | | 340,907,000 | | | 33,284,000 | |
Weighted average number of share outstanding (Note 13(a)) | | | 350,056,012 | | | 350,056,012 | | | 350,056,012 | |
Basic and diluted earnings per share (US$) | | | 1.000 | | | 0.974 | | | 0.095 | |