| 2005 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|
| Auckland | 3 422 | 3 575 | 3 401 | 3 511 |
| Canterbury | 3 203 | 3 431 | 3 084 | 3 162 |
| Waikato | 2 531 | 2 781 | 2 664 | 2 607 |
| Bay of Plenty | 1 461 | 1 445 | 1 463 | 1 512 |
| Hawke's Bay | 1 130 | 1 176 | 1 090 | 1 117 |
| Northland | 1 025 | 1 194 | 1 084 | 1 085 |
| Otago | 1 036 | 1 116 | 1 089 | 1 046 |
| Southland | 744 | 887 | 812 | 834 |
| Taranaki | 731 | 789 | 788 | 756 |
| West Coast | 189 | 202 | 217 | 192 |