The rate will never reach zero, but we may expect that it will continue to decline as contraceptives improve and attitudes to out-of-wedlock birth become more accepting, and as younger generations increasingly reject abortion as an acceptable resolution of a pregnancy.
Birth families were demanding a greater role in choosing an adoptive family for their babies, and birth mothers had more clout in the negotiating process as the stigma of having child outofwedlock eased.
The Lisa was named after the out-of-wedlock daughter Jobs had abandoned, just as Jobs had felt abandoned by his own birth parents, who had given him up for adoption as an infant.