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Key management personnel (Tables) | 12 Months Ended
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Jun. 30, 2018
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Summary of Key Management Personnel | Key management personnel compensation comprises:
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  | US$ |  |  | US$ |  |  | US$ |
Short-term employee benefits |  |  | 13,190,838 |  |  |  | 16,439,948 |  |  |  | 14,979,983 |
Post-employment benefits |  |  | 1,506,108 |  |  |  | 1,895,828 |  |  |  | 2,356,594 |
Share-based payments |  |  | 13,356,657 |  |  |  | 13,747,355 |  |  |  | 16,837,179 |
Total |  |  | 28,053,603 |  |  |  | 32,083,131 |  |  |  | 34,173,756 |

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