http://www.theadvertiser.news.com.au/common/story_page/0,5936,11889531%5E911,00.html
"AUSTRALIA billed failed asylum-seekers and other deportees more than $57 million last year but recovered just $359,000. Figures for the past three financial years show a fraction of the amounts billed has been paid. Overstayers and those who breach visa conditions by working illegally are the biggest culprits. Failed asylum-seekers make up a small part of overall detention and removal costs."