Where Was I in the Censuses?

The only two censuses that I might have been in so far are the 1990 and 2000 Censuses, but I do not know if any census takers ever came to my house. In 1990, I would have been too young to remember. In 2000, I remember that a census was occurring, but I don't recall anyone coming to the door to ask about our family. I was under the impression that the census bureau would be mailing those sheets. I asked my dad if anyone had ever come by, or if we ever received a form, but he said no. So, I do not know if my family was recorded or not. So, I can't say for sure if I am in either census, even though I was living in the same house for both censuses.