The last fatal shark attack in New Zealand was around 35 years ago. The total number of document shark attacks since the 1850s is 48, with 9 of those being fatal (compared to 980/37 in the USA). Statistically speaking, it is more likely that one would be killed by a drunk driver than a shark.
Despite this reasonable and mathematically logical assertion, I am currently far more likely to walk down the street than I am to swim in the ocean. Everyone has a list of the ways they least want to depart this world. Shark attack is in my top 5. They scare me.