Another 17,200 New Zealanders need to quit smoking each year until 2025 if we are to reach the goal of less than 5 per cent of the population smoking daily by then, a new study has found. The research, headed up by Professor Nick Wilson of the department of public health at Otago University's Wellington campus, found the country was set to fall far short of the Smokefree Aotearoa 2025 goal if the current trend continues.