And when the NSS does produce figures comparable to the census, they closely match it (for example, the NSS and census figures for the child sex ratio in 2001 and 2011 are almost identical).

ECONOMIST: Banyan

Since then, almost a dozen countries have passed laws allowing same-sex marriages and domestic partnerships, including Canada, South Africa, Belgium and Spain.

CNN: Uruguay's senate approves same-sex marriage bill

Almost 60 MPs and peers have signed an open letter opposing government plans to legislate for same-sex marriages.

BBC: Same-sex marriage: 'No mandate', say MPs