Margins
| TTM | 2016 | 2015 | 2014 | 2013 | 2012 | |
|---|---|---|---|---|---|---|
| Gross margin | 62.4% | 62.2% | 60.7% | 59.7% | 58.1% | 57.0% |
| Gross margin growth (bps) | 122 | 154 | 99 | 164 | 105 | -204 |
| Operating margin | 18.3% | 18.0% | 18.5% | 21.0% | 7.5% | 18.4% |
| Operating margin growth (bps) | 29 | -50 | -246 | 1,343 | -1,083 | -107 |
| Net profit margin | 11.3% | 11.1% | 11.3% | 11.4% | 4.5% | 11.0% |
| Net profit margin growth (bps) | 19 | -15 | -9 | 689 | -647 | -109 |