Here’s the updated chart for US birth rates by age of mother, adding in the recent CDC data for 2013. Click on it for a bigger view.
As you can see, rates to women 15-29 continued to decline (though for 25-29 the decline was small), while rates for women 30+ rose, continuing the ripple effects of delay.
See post on 2012 data for analysis of these trends to that point (Older Women Having More Kids, Younger Ones Still Having Fewer).
More discussion to come after the first week of classes!