Margins
| TTM | 2017 | 2016 | 2015 | 2014 | 2013 | |
|---|---|---|---|---|---|---|
| Gross margin | 28.3% | 38.9% | 39.9% | 40.7% | 40.9% | 41.4% |
| Gross margin growth (bps) | 148 | -103 | -77 | -20 | -55 | -274 |
| Operating margin | -1.1% | -0.1% | 1.0% | 0.2% | -1.8% | 0.6% |
| Operating margin growth (bps) | -156 | -105 | 79 | 199 | -241 | 71 |
| Net profit margin | 0.4% | -1.0% | -0.6% | -1.8% | -7.2% | 1.4% |
| Net profit margin growth (bps) | 123 | -32 | 121 | 533 | -862 | 682 |