
| 2011 | 2012 | 2013 | |
|---|---|---|---|
| Males and females | 1 033 | 1 077 | 1 084 |
| 1-19 hours | 24 | 19 | 16 |
| 20-29 hours | 8 | 6 | 6 |
| 30 hours or more | 1 001 | 1 052 | 1 063 |
| Males | 875 | 909 | 920 |
| 1-19 hours | 17 | 11 | 8 |
| 20-29 hours | 4 | 3 | 3 |
| 30 hours or more | 854 | 895 | 909 |
| Females | 158 | 168 | 164 |
| 1-19 hours | 7 | 8 | 8 |
| 20-29 hours | 4 | 3 | 2 |
| 30 hours or more | 147 | 157 | 154 |