| 2005 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|
| Auckland | 6,123 | 6,626 | 6,465 | 6,492 |
| Canterbury | 5,950 | 6,598 | 6,042 | 5,931 |
| Waikato | 4,998 | 5,563 | 5,281 | 5,340 |
| Bay of Plenty | 2,710 | 2,912 | 2,891 | 2,904 |
| Northland | 2,055 | 2,385 | 2,185 | 2,296 |
| Hawke's Bay | 2,084 | 2,285 | 2,207 | 2,223 |
| Otago | 1,945 | 2,055 | 2,079 | 2,041 |
| Southland | 1,411 | 1,679 | 1,578 | 1,533 |
| Taranaki | 1,394 | 1,590 | 1,544 | 1,510 |
| West Coast | 336 | 426 | 431 | 412 |