Margins
| TTM | 2016 | 2015 | 2014 | 2013 | 2012 | |
|---|---|---|---|---|---|---|
| Gross margin | 34.8% | 34.9% | 35.0% | 35.9% | 36.4% | 36.8% |
| Gross margin growth (bps) | 47 | -7 | -93 | -52 | -41 | -39 |
| Operating margin | 5.6% | 5.5% | 7.6% | 9.8% | 10.8% | 11.1% |
| Operating margin growth (bps) | 6 | -217 | -217 | -97 | -32 | -42 |
| Net profit margin | 2.4% | 2.4% | 4.2% | 5.3% | 5.9% | 6.1% |
| Net profit margin growth (bps) | -51 | -176 | -117 | -52 | -20 | -23 |