A google on marriage in Norway throws up (phrase used deliberately) a host of references to same-sex marriage and the decline of traditional marriage there. A closer look reveals, however, that they are all copies of a paper by a right-winger called Stanley Kurtz.
The Council of Europe 2003 statistics on Norway do show changes in the pattern of family life. However, as the Executive Summary states:
"The main features of nuptiality are the declining number of marriages, the rise in the number of separations and the appearance of other forms of union, particularly cohabitation. There has also been a widespread parallel increase in the number of births outside marriage. In certain countries, such as Iceland, Norway, Sweden, Estonia and the former German Democratic Republic, such births represent more than 50% of the total."
The Christian right uses statistics in the same way they use bible quotes -- they find a piece to support their case, and totally ignore anything that doesn't support their "presuppositions". For example, why should the ex-GDR show an increase in number of births outside marriage and the former West Germany not, now that they've been one country for fifteen years with the same law on domestic partnership? Oh, sorry, that would require some thought, wouldn't it?
And Mr Kurtz? He's a Fellow at the Hoover Institution:
"Born and raised in Pittsburgh, Pennsylvania, Kurtz graduated from Haverford College, where he majored in comparative religion. Before taking his doctorate in social anthropology, Kurtz studied comparative religion at Harvard Divinity School. Since leaving the academy for the world of policy think tank, Kurtz has gained a reputation as an outspoken combatant in America's culture wars and an innovative commentator on the social foundations of the war on terror." (Bio on the website of the Hoover Institution, Stanford University