Margins
| TTM | 2016 | 2015 | 2014 | 2013 | 2012 | |
|---|---|---|---|---|---|---|
| Gross margin | 45.0% | 46.2% | 46.0% | 44.8% | 43.6% | 43.5% |
| Gross margin growth (bps) | -127 | 27 | 120 | 118 | 9 | -225 |
| Operating margin | 13.9% | 13.9% | 13.6% | 13.2% | 12.7% | 13.0% |
| Operating margin growth (bps) | -18 | 26 | 41 | 52 | -25 | -97 |
| Net profit margin | 12.0% | 11.6% | 10.7% | 9.7% | 9.8% | 9.5% |
| Net profit margin growth (bps) | 18 | 92 | 101 | -8 | 29 | -108 |