The link was announced as Scotland prepared to play Brazil in a friendly on Census Day.
Unemployment fell from around 15% for the week before Census Day 1940 to around 4.7% by 1942.
Their answers must be based on who is in their household on Census Day, Sunday 27 March.
Remarkably, thanks to scanners that can each read 50, 000 handwritten forms a day, initial population figures are supposed to be published within a month of census day.
ECONOMIST: A national head count should show dramatic changes
Declan Flanaghan, public relations officer for the London GAA, also finds it difficult to match the census figures with day-to-day reality.
The population of Northern Ireland, on the day the census was carried out in March 2011, had increased by 125, 600 to 1.811m, between 2001 and 2011.
Kirchner, nicknamed the penguin because of his Patagonian origins, died around 9am in Argentina, where the markets were closed because the national census was being carried out that day.
This is not simply a friendly call, but bound up with the fact that 27 March is the final day of Romania's population census - the first since 1992.
No such luck here: Shirky writes as if passively watching television is about to give way to constant Internet interactivity, but in the 2008 census Americans spent 2.8 hours a day in front of the boob tube, up from 2.6 hours in 2003.
From the Census Bureau today, confirmation of what many people see every day.
The U.S. Census Bureau says workers in this industry perform routine support activities for the day-to-day operations of organizations.
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