The abortion rate in the US is currently 1.2million a year, down from a peak of 1.4million in 1990.

BBC: News | Health | More abortions 'mean less crime'

Turkey has a 14.8% abortion rate compared to 18.9% in the United States, according to a 2011 United Nations Population Division study.

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His wife agreed that many people were misinformed about Down's syndrome and she thinks this has contributed to the high abortion rate.

BBC: Steep rise in Down's pregnancies

Russia, of course, still has a seemingly endless series of problems, but the reduction in its abortion rate is yet another reminder that, even in an environment of political stagnation, many social trends are moving in the right direction.

FORBES: Russia's Abortion Rate Is Rapidly Converging With Western Europe's

Experts warn that restricted access does not decrease the abortion rate but drives the procedure underground, creating a black market that threatens maternal health and more adversely affects poorer women who do not have access to safe abortions abroad.

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The reason for this was that the polyandrous females suffered a far lower rate of spontaneous abortion, which occurs when genetic incompatibility between the maternal and paternal genomes results in an immunological conflict between mother and embryo.

ECONOMIST: Polyandry