Norwegian census records

I'm told that it is normal for nominative census details to be sealed for a sufficient time period after the date of the census to ensure the personal privacy of individual citizens. In an era of "identity theft" such a policy is understandable. In the US, I think this period is 72 years. So, for example, the 1930 US census details were not available for public inspection until 2002. Please correct me if I have the embargo period wrong. Does Norway follow a similar practice and, if so, what is the time period that detailed census records remained sealed? Thanks for your help.