| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Based on interaction between Hilton and Province Emis Unit | 346 |
50.5%
|
| 2 | 2. December 2007 submission | 336 |
49.1%
|
| 3 | 3. No response | 3 |
0.4%
|
| Sysmiss | 3302 |