The last census we had that was on paper I actually filled out, the questions that I found to be too intrusive I answered "I am not comfortable providing this information" I mean the question of how much I earn, in what way does that help with future planning. We will still need hospitals, new roads and what not regardless of how much a person earns.
Anyway I never actually got around to sending it in and found it sitting in an old pile of paperwork probably 2-3 years ago and then I just shredded it.
Also, the last census if I remember correctly you filled out anonymously, now with this current census you are given a login number which will correspond to your address and I have heard that you have to supply your name when completing it.
Personally I am still undecided whether or not I will bother doing it, although I understand why the census is necessary in regards to the future planning for infrastructure.
But are the personal questions actually necessary for future planning?