Christianity Decreasing in New Zealand

The number of people who affiliated with Christianity in New Zealand have decreased  since 2006. Check out the following statistics:
Religious privilege in New Zealand:

New Zealand is one of the most secular and tolerant countries in the world. The key legislation that upholds the principles of the fair and tolerant society are the New Zealand Bill of Rights Act (1990)and theHuman Rights Act (1993). There are however still relics in New Zealand government and law that continue to discriminate on the basis of belief. New Zealand Association of Rationalist and Humanists (http://www.nzarh.org.nz/secular.htm)

Religion is increasingly a minority affair in New Zealand (www.stuff.co.nz)

Religion to become extinct in Australia & New Zealand (BBC)
UN praises NZ’s prostitution laws