Almost every 10 years since 1841 the UK has had a nationwide census. The data are held by the National Archives and remain closed for 100 years after the date they were conducted (although aggregate data can be obtained from more recent times such as data from the 2011 census on Leeds Observatory). Once 100 years is up, they become open and provide a fascinating snapshot of the country. In amongst the serious data can be found some entries that seem less serious to today's ears. The 1881 census asked citizens to declare their "rank, profession or occupation":
What will people in the future find in the censuses of today? We already know that the 2011 census of England and Wales has 176,632 people listed with the religion "Jedi". That's 0.3% of the population! What else will they find?