$100,000 per year $100,000 per year at least A$80,000 highest in the country, costing taxpayers $2.6 billion per year $292 per prisoner per day http://www.sbs.com.au/news/article/2015 ... lian-jails http://www.sbs.com.au/news/article/2015 ... lian-jails $2.6 billion annually. costing $2.6 billion annually. highest proportion of prisoners in education