When you get to small numbers the introduced error gives some quirks. But sometimes you think the respondents are having a joke at the ABS expense. Sitting with ABS personnel interrogating before the introduction of error revealed a resident of Streaky Bay who spent the night in Streaky bay and caught a tram to work.
*googles 'horse drawn tram Streaky Bay' and sadly comes up with nothing*
Apparently 5 people in Streaky caught public transport to work that day: http://www.censusdata.abs.gov.au/census_services/g...
I am talking 2001 census, and without added randomness to protect confidentiality.