The proportion of divorces that involve couples without children has risen sharply to 51 percent in 2015 from 46 percent in 2010, a report showed Wednesday.

According to the Judicial Yearbook 2016 published by the National Court Administration, among the 108,397 divorced couples in 2015, 55,600 were childless.

The proportion of divorces involving those without children exceeded 50 percent for the first time in 2014.

In 2015, 26 percent of those who divorced had one child, while 20 percent had two children.

The least common cases reported during the same period were those with three kids, standing at 4 percent.

Meanwhile, the proportion of the divorced whose marriage had lasted more than 20 years also rose to 30 percent in 2015 from 24 percent in 2010.

Incompatibility was the most highly cited reason for divorce last year, followed by financial difficulties.

By Bak Se-hwan (sh@heraldcorp.com)