What happens when a nation becomes secular?

I could not resist reproducing the following snippet from the today's NSS newsletter:

According to polls, Norwegians define themselves (depending on how you interpret their definition) as up to 71% non-believers.

What has secularism done to Norway? The Global Peace Index rates Norway the most peaceful country in the world. The Human Development Index, a comparative measure of life expectancy, literacy, education and standard of living, has ranked Norway No. 1 every year for the last five years. Norway has the second highest GDP per capita in the world, an unemployment rate below 2 percent, and average hourly wages among the world's highest.

Interesting....