Germany has one of the world's lowest birthrates (1.37 children per woman compared to about 2.1 in the USA). The German government's recent efforts to promote procreation have included offering one-year paid maternity leave to working mothers. But the most effective population booster so far appears to have been hosting the 2006 World Cup: nine months later birthrates in parts of the country increased by nearly 30 percent compared to last year at the same time. The newborns have dubbed the "Klinsi Generation."

Germany, coached by Juergen Klinsmann, finished third at during the festive tournament. Rolf Kliche, head of a maternity clinic in Kassel, said "It's clear that more children are sired during optimistic times, and during the World Cup, emotions run high, which can have a positive effect on sex and raise the possibility of a woman getting pregnant."