Passage: Primary and secondary schooling is compulsory for children aged 6 to 16, with the majority attending from the age of 5. There are 13 school years and attending state (public) schools is free to New Zealand citizens and permanent residents from a person's 5th birthday to the end of the calendar year following their 19th birthday. New Zealand has an adult literacy rate of 99%, and over half of the population aged 15 to 29 hold a tertiary qualification. There are five types of government-owned tertiary institutions: universities, colleges of education, polytechnics, specialist colleges, and wānanga, in addition to private training establishments. In the adult population 14.2% have a bachelor's degree or higher, 30.4% have some form of secondary qualification as their highest qualification and 22.4% have no formal qualification. The OECD's Programme for International Student Assessment ranks New Zealand's education system as the seventh best in the world, with students performing exceptionally well in reading, mathematics and science.

Question: Out of adults in New Zealand how many have no formal education?
22.4%