Margins
| TTM | 2017 | 2016 | 2015 | 2014 | 2013 | |
|---|---|---|---|---|---|---|
| Gross margin | 23.9% | 25.4% | 26.3% | 27.4% | 25.7% | 28.9% |
| Gross margin growth (bps) | -271 | -85 | -110 | 163 | -318 | -4 |
| Operating margin | 0.0% | -7.3% | -4.1% | -0.7% | -2.4% | 2.0% |
| Operating margin growth (bps) | 91 | -318 | -345 | 178 | -445 | 2 |
| Net profit margin | -7.9% | -8.3% | -3.5% | -0.4% | -1.5% | 1.3% |
| Net profit margin growth (bps) | -91 | -479 | -315 | 110 | -282 | -17 |