"The UK Peace Index, from the Institute for Economics and Peace, found UK homicides per 100,000 people had fallen from 1.99 in 2003, to one in 2012."
Adding one more child to every '100,000' will do that.
Is this then pro-immigration or imprecise pacifics?

Ignorance is bliss, bliss is happiness, I am happy...to draw your attention to the possible connectivity in the foregoing.