Most developed countries face similar population problems. The number of births is down and with increasing life expectancy, the proportion of the older, retired population is increasing. This leads to aging of the population that has significant economic consequences. Whereas decades ago it was rare for women to work full-time, today most women enjoy equal work benefits and many pursue professional careers. This leads to a delay in the first pregnancy and fewer overall pregnancies per couple. Trying to start a family at an older age is also associated with an increased need for infertility services. The average age of women undergoing fertility treatment is increasing and the proportion of cycles in which donor eggs must be used is also on the rise.