Corruption and Religion

Here are the least corrupt countries according to https://en.wikipedia.org/wiki/Corruption_Perceptions_Index (May 2017):

Denmark, New Zealand, Finland, Sweden, Switzerland, Norway, Singapore, Netherlands, Canada, Germany, Luxembourg, UK, Australia, Iceland, Belgium, Hong Kong, Austria, USA, Ireland, Japan.

Importance of Religion by Country

The least religious Countries according to https://en.wikipedia.org/wiki/Importance_of_religion_by_country (May 2017) are:

Sweden, Estonia, Denmark, Norway, Czech Republic, Japan, Hong Kong, UK, Finland, Vietnam, France, Australia, Netherlands, New Zealand, Belgium, Cuba, Bulgaria, Russia, Belarus, Luxembourg