Elective abortions are not legal in Spain but they do have a health of the mother clause (both mental and physical) that accounts for 97% of the abortions. Abortion clinics have financial ties to psychologists who issue assessments for the abortion clinic patients that they need an abortion for psychological reasons (this is why pro-lifers fought so hard against “health of the mother” exceptions to late-term abortions).

Under Spain’s practically nonexistent restrictions, abortions have more than doubled since the mid 1990s, climbing from 51,006 in 1996 to over 120,000 in 2007. The abortion rate is now approaching one in five pregnancies (18.3%), according to the report.
[…]
The report uses images to demonstrate the seriousness of Spain’s abortion rate: the equivalent population of a mid-sized high school disappears every three days. Every twenty days the death toll equals the annual number of people killed in car wrecks. The total death toll, more than a million Spaniards since 1985, is the equivalent of multiple Spanish provinces.
[…]
Spain’s abortion rate is a major contributor to the country’s worsening demographic problems. The average number of children per family in Spain is only 1.3, well below the replacement rate of 2.1. The downward pressures on population are being relieved by a massive influx of immigrants from Arab countries and South America, which are beginning to replace the native Spanish.

If the Islamists were smart, they would wait until they outnumbered the native Spanish and then take over the country without firing a shot or detonating a bomb. Why make the effort when the Spanish are killing themselves?