| sales | Q/Q | |
| 2018Q4 | 350 | -41% |
| 2018Q3 | 467 | -17% |
| 2018Q2 | 538 | -14% |
| 2018Q1 | 495 | -7% |
| 2017Q4 | 597 | -12% |
| 2017Q3 | 564 | -4% |
| 2017Q2 | 627 | 0% |
| 2017Q1 | 533 | -7% |
| 2016Q4 | 677 | 6% |
| 2016Q3 | 588 | 4% |
| 2016Q2 | 630 | 11% |
| 2016Q1 | 576 | 7% |
| 2015Q4 | 639 | 3% |
| 2015Q3 | 566 | 0% |
| 2015Q2 | 567 | 0% |
| 2015Q1 | 538 | 1% |
| 2014Q4 | 622 | 6% |
| 2014Q3 | 568 | 8% |
| 2014Q2 | 567 | 7% |
| 2014Q1 | 532 | 15% |
| 2013Q4 | 588 | 15% |
| 2013Q3 | 526 | 9% |
| 2013Q2 | 529 | 13% |
| 2013Q1 | 461 | -10% |
| 2012Q4 | 513 | 4% |
| 2012Q3 | 482 | 3% |
| 2012Q2 | 469 | -2% |
| 2012Q1 | 515 | 19% |
| 2011Q4 | 494 | 6% |
| 2011Q3 | 469 | 16% |
| 2011Q2 | 477 | 14% |
| 2011Q1 | 434 | 6% |