 However, in the 1960s, it was estimated that a third of US women who wanted no more children would have at least one unintended pregnancy by the end of their childbearing years.In the 1950s and 1960s, it was estimated that 200,000–1.2 million illegal abortions occurred annually.Women sometimes died as a result of these procedures, accounting for 17% of all deaths attributed to childbirth and pregnancy in 1965.