Annual injury frequency (N=902) and incidence rate, 2004–9
| Year | Injury frequency | No employed | 24-h Employees | 8-h Employees | Total hours worked* | Incidence rate (per 200 000 h) |
| 2004 | 129 | 530 | 477 | 53 | 1 441 600 | 17.9 |
| 2005 | 128 | 577 | 490 | 87 | 1 546 000 | 16.6 |
| 2006 | 148 | 625 | 518 | 107 | 1 664 400 | 17.8 |
| 2007 | 174 | 659 | 566 | 93 | 1 770 800 | 19.6 |
| 2008 | 199 | 694 | 580 | 114 | 1 852 000 | 21.5 |
| 2009 | 124 | 667 | 613 | 54 | 1 824 400 | 13.6 |
↵* Based on an average of 2800 and 2000 h worked by 24 and 8-h employees, respectively.