Here is an interesting article dealing with the vexed question of why the birth rates of the Nordic peoples (people of Northern European descent) are crashing, everywhere:
“Europe is a dying continent. I say this not as a criticism, but rather as a statement of fact. In Europe, an acute failure to produce the next generation has created a looming demographic crisis. According to research by both the CIA and the U.N., every single member of the European Union has a birthrate significantly below the replacement rate of 2.1 births per woman. In the CIA World Factbook, Germany had a birthrate of 1.36 children per woman in 2007, and Spain and Italy had birthrates of 1.29. At such low levels of fertility, within 100 years, those three nations would have populations 80 percent lower than they are today. And Germany, Italy and Spain are far from alone: Every single industrialized country in Europe has a birthrate below 1.9 children per woman.