On 5 August 2008 the New Zealand Minister of Transport, Hon. Annette King, released the New Zealand Transport Strategy 2008 UPDATED (NZTS). It is well worth a read.
References directly relevant to international air services negotiations can be found on pages 9, 41, 55 and 75.
Also released at the same time is a related new Transport Monitoring Indicator Framework. This is very much a work in progress. When compared to Australian official transport statistics New Zealand's have been much less comprehensive. This new development should help improve the situation while being more focused on the long-term targets that the New Zealand government wishes to achieve.