More women over 50 having babies than ever before

This was just published today showing that the number of babies born to women over 50 has doubled in the last four years.  As fertility treatments become more effective, older women are able to have children later in life as they delay the decision to have children for many reasons.
http://www.theguardian.com/lifeandstyle/2014/mar/31/number-babies-born-women-over-50-doubles-four-years?CMP=twt_fd