"Twenty percent of women in their 40s do not have children" - http://www.nytimes.com/2010/06/13/us/13generations.html?_r=1 http://www.nytimes.com/2010/06/13/us/

"Twenty percent of women in their 40s do not have children" - http://www.nytimes.com/2010/06/13/us/13generations.html?_r=1 http://www.nytimes.com/2010/06/13/us/13generations.html?_r=1