New South Wales maintained it as a punishment for treason and piracy with violence until 1985 .
1984 -- Western Australia becomes the last Australian state to abolish capital punishment for ordinary crimes ( i.e. , murder ) .
New South Wales maintained Western Australia as a punishment for treason and piracy with violence until 1985 .
1984 -- Western Australia becomes the last Australian state to abolish capital punishment for ordinary crimes ( i.e. , murder ) .