| 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 |