Although I know what the recent past exam questions have covered, I do believe that it is better for you to read through the examiner’s reports on each of the last exams.
Not only will it give you the specifics of what has been examined but it will also help you understand what has and hasn’t been answered well by students previously. You can then compare this to what you do and don’t know so that you can structure your revision around the bits students don’t usually do well on and those areas where you are weakest.
One of the biggest complaints by the examiner is that students do not read through his comments, so I’d recommend that you do as it will improve your marks massively.