Spain, long concerned about its aging population and emptying countryside, passed a milestone in population decline on Wednesday when it recorded more deaths than births in the first half of this year.

Deaths exceeded births by more than 19,000 in the first half of 2015, a turnaround from a year earlier when there were nearly 4,000 more births than deaths, the National Statistics Institute (INE) said.

Spain has not consistently experienced more deaths than births since its 1936-39 civil war or the 1918 Spanish flu pandemic, according to news reports. Deaths briefly exceeded births in early 1999, but demographers considered that a blip while now they see it as the start of a longer trend.