The New Zealand Crime and Victims Survey reveals most violent crimes have been dropping in the past two years.

It finds the number of sexual assault victims steadily increased over this time.

More beat officers are being deployed in Auckland to act as a deterrent to crime.

Chief Victims Advisor Ruth Money told Andrew Dickens that these numbers are highly volatile.

She says there's lots of high pressure times, like Christmas which can see an uptick of crime in the community.

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