Every ten years.
The year 2011
they conduct a census every 10 years
The first census in Pakistan was held in 1951.
Every ten years
Annually, for taxes and whatnot.
2001 , along with rest of the UK.
The next United States census survey is scheduled to take place in 2030.
The number of Representatives is set by law, presently at 435. The apportionment of the Representatives among the states is determined by a census which takes place every ten years, as required by Article I, Section II of the U. S. Constitution. The next census will take place in April 2010.
The Colombian civil war took place in Colombia ,not Panama.
Finlandia, Colombia
End of July
by a census