original question: Which recurring event currently has a frequency of [Decade]?
answer: census in the united kingdom
answer type: Recurring event.
auxiliary information: A decade is a period of 10 years. The word is derived from the Ancient Greek dekas which means ten. Other words for spans of years also come from Latin: biennium, triennium, quadrennium, quinquennium, lustrum, century, millennium.
The [Decade] is the frequency of a recurring event by which name?