22. Finance costs
| 2012 | 2011 | |
|---|---|---|
| Interest on long-term debt | $57,077 | $56,618 |
| Unwinding of discount on provisions | 13,537 | 13,427 |
| Other charges | 7,576 | 3,179 |
| Foreign exchange (gains) losses | 415 | (1,678) |
| Interest on short-term debt | 1,744 | 2,122 |
| Total | $80,349 | $73,668 |