SEJONG, Aug. 19 (Yonhap) — Service output fell in all provinces and cities across South Korea in the second quarter of this year as the coronavirus pandemic crippled demand, data showed Wednesday.

The southern resort island of Jeju suffered the biggest setback in service output in the second quarter, reporting a 12.9 percent contraction, according to the data from Statistics Korea.

The southeastern city of Daegu, once the epicenter of the virus in the nation, posted a 4.6 percent decline in service output.

Retail sales, however, showed signs of improvement in the second quarter.

Retail sales rose in 12 provinces and cities, except for Seoul, Jeju, the southeastern port city of Busan and the western port city of Incheon.

Jeju reported a 28.1 percent plunge in second-quarter retail sales, while Daegu posted a 4.7 percent gain, according to the data.

Retail sales in Seoul and Incheon dipped 8.3 percent and 5.2 percent, respectively, the data showed.

The statistics agency said South Jeolla Province saw its retail sales rise 10.2 percent in the second quarter, helped by modest gains in sales of shopping centers and convenience stores.