A quote from the BBC website, 31 March 2006

[T]he number [of women] without children will double in many countries to around 20% – except Germany, where the figure is already closer to 30%, [...] [Alexandra] says that the assumption that it is only the work-mad who shun parenthood is far from accurate. “I didn’t make the choice for career reasons – it was a lifestyle choice. I only work part-time and I like to enjoy life,” she says.