| | 12-31-2017 | | 12-31-2016 | |
| | ThU.S.$ | | ThU.S.$ | |
Current | | 5,730 | | 5,244 | |
Non-current | | 66,033 | | 60,084 | |
Total | | 71,763 | | 65,328 | |
| | 12-31-2017 | | 12-31-2016 | |
Reconciliation of the present value of severance indemnities obligations | | ThU.S.$ | | ThU.S.$ | |
Opening balance | | 65,328 | | 56,433 | |
Current service cost | | 5,583 | | 5,334 | |
Interest cost | | 3,208 | | 2,957 | |
(Gains) losses from changes in actuarial assumptions | | (3,711) | | 2,083 | |
Actuarial gains and losses arising from experience | | 1,212 | | 3,503 | |
Benefits paid | | (5,654) | | (7,871) | |
Increase (decrease) for foreign currency exchange rates changes | | 5,792 | | 2,889 | |
Closing balance | | 71,763 | | 65,328 | |