Ok I have written about our constitution and how we don't have what some would call a bill of rights, we do have a few constitutional rights which are.
Right to vote but not for aborigines until I think 1962
Right to trial by jury in certain cases but not all
Right to be paid a fair price if the government compulsory acquires your property
Freedom of religion
Protection against discrimination base on which state you lived in
We also have free trade between states and the right to remain silent is recognised by all states and federal courts.
There have been 44 referendums with only 8 changes being approved the last referendum was in 1999 about Australia becoming a republic since we are not that didn't get approved. The constitution can only by altered by a referendum and to succeed a majority of voters nationwide and states (4 out of 6) must approve the changes. Our next referendum is on the 14 October 2023.