For year ended 31 December
| 2005 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|
| Bay of Plenty | 6,431 | 6,189 | 7,931 | |
| Northland | 2,536 | 3,117 | 3,177 | 5,581 |
| Waikato | 9,653 | 5,585 | 6,115 | 5,181 |
| Otago | 2,895 | 1,045 | 2,654 | 3,295 |
| Gisborne District | 1,752 | 3,225 | ||
| Tasman District | 2,886 | |||
| Hawke's Bay | 4,022 | 2,790 | 2,772 | 2,738 |
| Manawatu-Wanganui | 1,267 | 1,796 | 2,339 | 1,969 |
| Canterbury | 1,981 | 1,273 | 1,332 | 1,742 |
| Marlborough District | 1,177 | 1,528 | 1,113 | 1,576 |
| Auckland | 847 | 1,219 | ||
| Southland | 1,033 | |||
| Wellington | 738 | 831 | 967 | |
| Taranaki | 175 | 51 | ||
| Nelson City | 560 |