Information from the Directorate General for Health (DGS) reveals that in 2015, close to 15,900 terminations were carried out, which is 2,139 fewer than in 2008 when voluntary terminations became legal.
Around a third of abortions are done in private clinics and the vast majority of interruptions were by choice.
Pregnancies of up to ten weeks can be terminated voluntarily in Portugal, without clinical or criminal reasons, following the law introduced in 2008.
The number of interventions carried out every year has been dropping since 2012.
Between 2008 and 2011 the tendency was for the number of abortions to grow, but they have been dropping since 2012.
From 2012 to 2013 the number of voluntary terminations dropped by a significant 6.6 percent, while the year after the drop was even bigger, at 8.7 percent.
Of the women who opted to have an abortion during the course of last year, around half already had one or two children, whereas 42.3 percent had no children.
Most (70 percent) had never had an abortion before, while 21 percent had had one previous intervention, almost six percent had had two, and 2.5 percent of the woman had already had three or more abortions previously.
More than seven in every ten terminations were carried out at a facility belonging to the national health system.