Margins
| TTM | 2017 | 2016 | 2015 | 2014 | 2013 | |
|---|---|---|---|---|---|---|
| Gross margin | 36.3% | 36.3% | 36.3% | 34.4% | 36.3% | 35.9% |
| Gross margin growth (bps) | 2 | 2 | 186 | -193 | 41 | -28 |
| Operating margin | 0.5% | 0.5% | -0.3% | -1.3% | 0.1% | 0.0% |
| Operating margin growth (bps) | 80 | 80 | 96 | -141 | 14 | 398 |
| Net profit margin | 0.0% | 0.0% | -1.3% | -1.8% | -0.2% | -0.4% |
| Net profit margin growth (bps) | 133 | 133 | 46 | -157 | 19 | 432 |